Martin there are lots of things I don't really care one way or the other about. Skiing, cabbage, and keeping tropical fish spring to mind. But I don't ridicule and insult those who do care. Ok so it's hard to have strong feelings about cabbage one way or the other.

But why do you get angry/ridicule/insult other peoples choices, if you do not care about them? They provoke a reaction in you, so you must care.