Which subjects do you like to talk about, but your friends/family don't?

[Mighty Oracle]

For myself, it's definitely meteorology. I absolutely love the study of weather, but no one in my family save my dad actually enjoys studying it, much less discussing it. As for friends, I have a few, but they're few and far between.

How about you guys?

[Faust]

I enjoy speaking about theories and hypotheical situations. ^^
Not to mention any story ideas I have...

Too bad I can't talk about that with my dursely like parents who felt the need to scream at me 'there's no such thing as magic!!'

[JackO]

Religious discussion and such moral issues.

My parents are very much "That's what it says in the bible" type Christians. I myself am more of an open minded type agnostic, but being this way, I don't mind discussion, but if it ever comes up, the only answer I get is "That's not what the bible says" 

[FallenStar]

Nothing.  Every time I open my mouth to talk about something I like, nobody either cares or people prove me wrong.