I just read a post about how pointless it is to argue about matters of taste, about what constitutes good taste. And you know what? I completely agree with that, right up until someone's taste devolves to the level of a caveman.
I absolutely will argue with someone who listens to overly sexualized, pornographic music while they’re only 12 years old. I absolutely will argue with someone who romanticizes drugs in the name of good taste simply because they're considered cool among young people.
Of course, I agree that taste is something people will never all agree on, and that it's a very subjective thing. But just like freedom of speech has its limits (you have freedom of speech as long as you're not using it to restrict someone else’s freedom), I think matters of taste have their limits too.