The Orthodox Position

You are saying that the very definition of morals is that it is the right way to behave. But you are forgetting not everyone thinks that what everyone else is doing is the "right thing to do." What about in cannibalistic cultures? What about in Arab countries where little girls are abused and taken advantage of, based just as much on culture if not more than religion. In Nazi Germany, a place which was considered amoung the highest societies in the world at the time, which great art and theatre and scientsists, they still found no problem killing millions of people for no reason. Morals without G-d are ones which can change when people want them to, and this has been proven by history. I would never kill someone, 1. because it is wrong, as you mentioned, but 2. because G-d would never ask me to UNLESS is was needed i.e. to kill a murderer.

You claim your values are better simply because they are based on doing the right thing. You are treating other people good BECAUSE its the way you wanted to be treated, not because its the right thing to do. You are aware that in a society without G-d, then the only way for order to be maintained is for people to treat others the way they wanted to be treated. You want safety and security, so you build up this society where you just care about yourself and only follow rules to keep yourself safe. G-d commanded people to give 10% of all their produce to poor people in the Bible. G-d commanded us to be nice to orphans, widows, and strangers. These are things you might think people would do anyway without that command, but that is only because you are growing up in a world based on these values. In the caste system in India, they believe if someone is born into a poor family they deserve and you don't help them out. Your "morals" are not universal, and you make that mistake as someone who grew up in Judeo-Christian culture to think that people will naturally be good to others. Also, don't you ASSUME things about me, such as thinking that atheists are wicked. I didn't used to believe in G-d, I was raised that way until my late teens. I changed after contemplation on the matter and seeing many events which I found difficult to attribute to coincidence. You will probably say: Ahah! He only believes this because he was too stupid to accept that certain thigns just happen. But I don't see it like that, I see it the opposite.

How do you push your beliefs on anyone else? In my public high school in massachussetts, they had a gay day. What place does that have in a public school, and to take a day off from learning!? I dont bring my bible into public school, but you bring your "gay religion" in. To be honest, even atheists have a religion, its called naturalism(not the nudisty based one). You think everything is run by nature. You attribute fanatical beliefs to your anti-religion ideaology. It is just another religion as far as I am concerned. In Israel there was a gay pride parade scheduled to take place in Jerusalem. A HUGE majority of the city was against it, yet the government was going to let them march through the streets. They are trying to take over the world, and force everyone to accept it. I dont walk around in New York city shouting at everyone that isnt my religion they are going to hell, yet the gay people are going to a place they dont belong, where there are almost no gays, and then shoving their lifestyle in peoples faces. That is completely inappropriate. If you dont want me to shove my religion in your face, dont shove yours in mine. And what rights exactly are you fighting for? Marriage? Why do you need to get married, what is wrong in living together? If all you want is benefits or something like that that a married couple gets, I dont care if you have that. But why do you want more than that? Thats what everyone else has. Take it. But to say you want marriage, which there should be no need for for one without G-d, since to those there is nothing wrong with living together unmarried.

I have never persecuted a gay person or gone on a march against them.

Also, your last point is very important, in showing how little you understand religious philosophy. You are using the famous excuse mentioned by many people for why G-d doesnt exist, which is why do bad things happen to good people, or conversely, why do good things happen to bad people. This is an incredibly complicated topic, which is not appropriate to address here, but to just mention some of the answers. 1. You dont know if a person is really good, either considered good by G-d in their actions, or maybe they act good in front of you but in private they do all kinds of bad things which G-d is punishing them for. An example would be someone who gives tons of money to charity, but then in private might beat their wife and kids or something. 2. Maybe the bad being done to a good person is not really bad. Whether it would be good for the "bad" to happen for a better good in this world, or in the world to come. A simple example for this is as follows. A child starts to use drugs. The parent, knowing better than the child, punishes the child for using the drugs, thus perhaps saving the child from a lifetime of addiction. The child only thinks that the parent is mean and bad, and taking away fun from them. But in reality, the parent is saving the child. Alternatively, maybe a person might be good now, but in the future they would be confronted with a situation that would throw them into a world of sin that they could not overcome, and thus take away whatever reward they had coming to them. G-d, being merciful and just, would make the person die now so that they could receive a full reward after dying and not receive any punishments. Alternatively, many religions believe in reincarnation in some form. Maybe a person was being punished for a past life in which they were evil. 3. The wicked might receive whatever reward they have coming to them in this world so they can be punished in the world after death, and the rightous receive the punishment in this world so that they can receive a pain free reward after death.
There is more to that, and it was meant only as an introduction. Nevertheless, I hope this helps give you a new perspective on life about why bad things might happen. I would never tell these to someone when they are currently in the midst of a tragedy, that would be cruel. You do not go up to someone that lost a family member and tell them they had it coming. That doesnt mean its not true though. Some things are just too hard to see the outcome when they are happening now, just ask any historian if they have seen what appeared to be a small event have a huge impact hundreds of years later.
"How can you look at the unspeakable suffering inflicted on the undeserving and still believe in any supreme being who is all-powerful and all-knowing?"
You are assuming that you are all-knowing, by stating the word undeserving as I stated above. You just can't claim to know the whole situation whereas G-d can.