More easier to make money, shelter in New Vegas than in real life.

You don't even have to put yourself in dangerous situations. You can just scavenge and sell the crap. And small animals always appear that require just 1 shot or 1 hit with a hand held weapon.

And you don't have to worry about rent or property taxes since you can sleep for free in many buildings. Even in places you do have to pay, it's dirt cheap compared to real life where sleezy cheap motels cost more. Even hostels cost more. You can for the most part avoid sleeping outside.