Should I get a haircut?

I don't like having short hair, but my hair is quite long now and I do get some people who tell me I need a hair cut, but mostly they are people who's opinions I don't share (My Mum) or a couple of my friends.

I think it looks a bit wierd, and it can be annoying sometimes, but I've grown attached to it. And like I said before I don't like short hair.

So, opinions please.