whats wrong with living with your parents?

Yes, and during those 100+ years, we've seen the booms (such as the 'Star Wars' defense build up during the Cold War in the '80s, the dotcom bubble of the '90s, and the housing bubble of the '00s), as well as its busts after its corresponding booms, of the American economy. It's the business cycle.

What would they have to do this thread? Something/someone, like technology or institutions, have artificially caused the economy to rise but they did not last long. During the Cold War, Reagan increased the defense budget to fight the Soviets which gave his constituents high paying jobs. And when that was over during Bush Sr., people complained and voted for Clinton. With more advanced military technology, there comes the dotcom bubble where business boomed temporarily b/c of faster communication but those startups weren't think in the long-term. After that boom, there was the recession of '01-'03 and people were unhappy. That preceded the housing bubble where people got loans that they could not afford, probably b/c they decided to move out early as a very young adult forcing them to rent thereby reducing their savings. So, another huge recession occured afterward, and hence Obama becoming president. The reason for the complaints during those busts would be b/c these people were worrying about paying the rent/mortgage and not living with their parents. So, I wonder when the next boom will occur and what will be the cause?

So, the main point is that culture has a major influence in the economy.

Also, I've noticed, with each passing generation, we seem to become fatter and lazier and maybe that could be b/c of more independence and less parental influence of the older generation that was more hardworking than the next. Maybe I'm wrong but if we weren't that way then illegal immigration would not be an issue, as well as outsourcing where we are not willing to do manual labor at a lower wage.

What do you mean by nagging? I ask b/c doesn't that depend on if they're right or not, in the long term?

In my case, yes, there were things that I didn't like but, down the road, it made sense. For example, if my mom weren't there to stop me from eating more than two cookies after a meal, I would have increased the chances from diabetes and thus getting ill and missing work. If my dad weren't there to teach me how to clean the air filter of my used car, which I paid for with my own money, I would have had more breakdowns and I would have been more inclined to buy a brand new car, which is a lot pricier. If my dad hadn't told me to completely turn off my computer (what I mean is making sure the lights on my monitor and hard drive off) since I don't for over 12 hours as I have to sleep, work, etc, then I would have done the same thing if I had my own place to save money. So, I'm also learning plenty of things b/c I chose to live with my parents in adulthood.

Speaking of my own place, in Los Angeles where I'm from, renting an apartment can cost $1000/month. So, in a year that would be $12000 and in a decade that would be $120K. That makes a HUGE difference. So, now, I understand why the average American is struggling to pay off their mortgages when they get married, student loans, and other expenses. That's why these are the ones who love to join labor unions and Occupy Wall Street, ask for a raise in the minimum wage, support raising taxes for the rich, ask for loans, depend on Social Security, Medicare, and a plethora of benefits, and ultimately vote for Obama. So, I can see why Mitt Romney doesn't understand the average American's plight as he inherited his wealth and why Obama is right when he said that you can't make it on your own. The irony is that those who want to become independent from their parents end up depend on someone else, ultimately the govt. So, either way, you end up dependent but the difference is that at least the parents can TEACH you while the govt just gives, gives, gives, for the sake of your vote.