Am I wrong for my reluctance in being more social?

Now I know I'm a homebody. Always have been. Have very few friends (And I actually mean close friends, some people who I'm cool with I am sometimes reluctant to refer to as friends) and don't get out of the house often (Unless you count going to work or to other places getting out, but people mean getting out as in going out to have fun). Friend of mine is trying to help me to be more social and get out of the house more. While I agree with his points and I would do that, but I am rather picky on who I ociate myself with. It takes a while for someone to really warm up to me. Also, the usual types of locations that people go to when they 'go out', bars and/or clubs, aren't really my scene. Been to bars before, been inside a club once. It was okay, but they aren't really my strong points. I just don't understand the joy of going to a place when the only way to talk to someone is by talking loudly or into someone's ear, not to mention there are too many people. So am I wrong for being reluctant to be more social. It's not like I don't talk to people, but considering how there are times when someone gets screwed over and such, sometimes people would rather reconsider warming up to people too easily than one should.