Yeah, I was kidding. Hence the *'s. Nevertheless I'm grade 6 classical theory. I play in all different types of bands with all different types of instruments.
I can tell you now, that learning theory was one of the best things and worse I done. It stunted creativity in a way.. but enhanced it inifinite-fold. I can play with ANYONE. Anyone in the world! Who understands musical theory. And not just call out notes and play. I've played around the world with people of all different cultures, and there's nothing quite like the feeling of playing with someone else who understands theory. You can communicate. Take songs a certain direction and abruptly (yet sensically) spiral off into something new.
As dmpoole says, many people I know and play with don't know there crochets from their quavers. But they're a joy to play with, their technique can excel regardless of theory knowledge. Many are better than me.
You have nothing to lose in learning theory, only a better understanding of music; it can be discarded at any moment. Don't limit yourself.