I brew such small batches, by the time I've put in that much time & effort I feel like I don't have enough to spare for competitions.
I have a half-dozen friends & family that I enjoy sharing my beer with, but when a beer turns out superb, I almost don't even want to share that one. "Oh, that... uh, that's just some lousy batch of {mumble mumble mumble}, you probably would like one of these instead." I will share the really good ones with my best buddies, but aint no random stranger judge gonna score any of my scarce primo beer from me. I'm selfish that way.