Live your life on your own darn terms! You've got to find things that are inspirational to you, and that can be Star Trek, or any number of other things, or a combination of many things; and all of those different things that you like ultimately define who you are. Don't pour water on something inspirational just because other people don't understand why you like it; and remember, you're never the only one out there who has similar feelings or interests about something.
Trust me, if anybody has a hobby/interest that makes for odd conversations and uncomfortable social implications, it's me! I've been a hobby micronationalist and fan of Nazi & WWII history for years now, and it's pretty important to me. There are plenty of people out there who wouldn't "get" my interests, and might even get judgmental about it. At some point though, I realized that my interests are more important than some arbitrary social measuring stick.
If your peers can't handle someone who isn't mainstream, they probably aren't worth having as friends; and if you're worried about not being able to find friends because of your specific tastes, don't. It's better to have no friends, or very few of them, than to wind up compromising on your individualism just so that you can gain a spot at the party.
I used to have a Wal-Mart manager who was a Next Generation fan. He once got on the overhead/intercom and said "Woop! Woop! Red Alert!" instead of "Attention Associates". I guess I just shared that little bit as a hearty example of the fact that Star Trek fans are probably more common than you realize. Trek on.
