I like playing sniper, but don't put one foot out on the battlements. Instant sniper spam.
I have nothing against those kinds of snipers, but it's not very beneficial to the team.
It's like a competition in it's own.
'Who can keep their laser head high and corner snipe better?'
Which is why I spend my time defending lower base with sniper, or, when I have a sentry on my arse, I cover sewers. Lots'a action.
Also lots'a spies.