It doesn't really bother me if someone doesn't like the music I like & feels the need to say so *shrug*
Meh, I'm just generally tired of unsolicited opinion that doesn't contribute anything to a given conversation.
In any case. To be honest, I feel like a lot of the 'constructive' criticisms that I hear about DT are very misinformed. Stuff like whether JP's playing is too mechanical, or that they're too self-indulgent, sounds like it's based on one or two songs. Objectively speaking, it doesn't describe all of their music across the board. Usually when I'm thinking about introducing DT to someone, I choose something that I think might appeal to them, and usually I'm right, and I generally say that no matter what one's musical tastes are, there's at least one song by DT that they will like. Now, for some people, LaBrie's voice is a clear barrier, unfortunate as that is, but outside of that, generally there's a song that appeals to everyone's tastes.
The funny thing is, I have a friend who quite openly expresses her dislike for Dream Theater, and from what I've heard, it's mainly due to LaBrie's voice. But a part of it has pretty much become a matter of stubbornness. I was once having a house party and Through Her Eyes was on my playlist. And she was like, "This song is nice. It sounds kind of romantic, who is this?" I told her, and she said, "Oh, I hate it!"