Rock and Pop: why do people have this misconception about music on here?

For instance, let's say we're talking about a fan of Nirvana. If they were to be unhappy about anything someone said, it's usually (most of the time) not because that someone disagrees with them. It's because of the way people on here go about it. They're rude and arrogant about it. They call them bitches and all other types of names. Then, usually they go on a personal attack when the person does get offended. It's not about you disagreeing. It's about you acting like a complete dumb who is being arrogant and rude as i said. You're not that important. Get over yourselves