"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." -Manuel II Paleologus
There is nothing wrong with being judgemental. A society that operates without social judgement has no moral compass.
When I say I don't care, it doesn't mean I don't pass judgement on it. I feel the same as you. But if I don't have to see it, hear about it and have it put forth as a valid "lifestyle" in my school or my kid's school or have it affect me in any way, I am not interested in how they want to spend their time.
Once they bring it into the public forum, that is where I take a stand.