I say I go out quite a bit. Why? Because I enjoy it, solely on that reason. I enjoy being part of hilarious conversations, expressing my thoughts and feelings to other people for understanding and comfort, and also hearing how other people of different walks of life act within in this world. I also drink because I actually like the taste of most alcohol (especially wine), and it puts me at an ease, and gives me more confidence to be open with people. I don't smoke because my throat is husky enough without fags ruining it.
Fair dues if you want to stay in be yourself. I was like that for years, to be perfectly honest. I mean I really didn't go out anywhere, apart from school. But I do find going out to be a lot of fun. And that makes me happier. But if you just likr staying in and reading a book, that's fair enough. A lot of people like time to their self, it's a great way to relax and reflect I suppose. And if that makes you happpy, then all the best for you.
But whatever you do (and this goes for Poica), don't go 'round calling people moronic sheep on the basis that they enjoy going out. The way you socialise does not make you unique and another person not. Don't gander the impression that just because I like to socialise at pubs, clubs etc that I have no level of intellect.