Why is wearing full leather in public seen bad?

Years ago, there was something of a fad among some (not all) gay men for wearing full leather. That's where the association came from.

It's not seen as "bad," because unless you're a religious fanatic or homophobe, homosexuality isn't seen as "bad". It's just rather silly. That fad hasn't existed for years now.

Why Wearing Racing Leathers on Public Roads May Be a Bad Idea There is probably no safer riding attire than a one-piece leather racing suit.

Most gay men I have encountered wear bright colors, short shorts and pink polo shirts. If I saw someone wearing full leather I would assume they were a biker

Probably Hollywood

I wouldn't assume that, they might just like leather and can afford it, so why not wear it. I love leather, and wear it often - (although I'd never wear five pieces at one time, sometime less is more).

its obvious if you dress like a gimp what people will think ..

Why do you first say it is 'seen bad' and then say it 'means you are homosexual'? What you are trying to say?