Guys not into the "scene"

Can you explain this to me, fellas? What does that mean to you? Why does the "scene" turn you off?I'm trying to understand this, because I've only very recently seen this when talking to guys. Frankly it frustrates me. Now, I can't force someone to like things that I like. The reason it frustrates me is because I like going out to bars and clubs and all that, and the instant I mention this when asked what I do for fun, some guys are very "I'm not into the scene" or "Oh..." and the conversation stops. Elaborate.