Then that's your prerogative. I live in NYC, and I rarely spend anything close to a hundred dollars going out. And the few times where I did spend a few extra dollars, it was a special occasions like birthdays, New Years, etc.
If people want to sit at home all the time & waste their lives away, then fine. Me on the other hand, I'm going out as much as I can, because I know if/when I have a family, all of that fun goes out the window. And even if/when I do have kids, I'm taking them out as well, making sure they enjoy life.