If you never came here, it would be no better, no worse. You haven't had a strong enough impact really to make a difference. Not that you couldn't mind you.
Also: Leave, stay... who cares? I can tell you that even if a prominent member leaves, no one would notice all that much. Yossy and Blizzard have been gone, I've been way less active.
Let's take a for instance:
If Zypher just left all of a sudden, never to return, and didn't tell anyone, no one would really care I think. Not because nobody likes him or anything, just because it's the internet and there's no reason to care. It would probably be at least a week before anyone even noticed he was gone, and then nothing would happen. We'd all move on. Same as if I left, even.
So who cares? If you think nobody likes you, then leave. This is the internet, you aren't obligated to stay where people don't like you, and you don't have to let them know you're leaving, just leave.
Anyway, can't say I feel sorry for you even if everyone here hated you. It shouldn't really matter. Why would you care what people you've never met think about you?