[ericd]

It's the same reason people in any field put down things - they like to feel superior by putting down the tools that others use, thereby increasing their own relative stature.

[foolinator]

I hate people who put down people. They're assholes and stupid.

Just kidding dude. I was just joking when I said that. I love coding. I'd fuck a node.js program and even let XML lick my balls at the same time.

[Goronmon]

On the other hand, you can generally complain the longest about the things you know the best.

[regularfry]

There's also a "familiarity breeds contempt" angle.