I'm now happy with life. I have an amazing girlfriend, and it's going okay.
I'm glad to hear that. I've had to deal with serious $hit and still do, and also considered suicide in my times of teen angst - but I never whined. Those were MY problems, not everyone else's. I dealt with them, some people helped me, and that's cool.

and it's the truly-depressed people I'm concerned about
You don't hear those people. A cry for help is healthy thing - truly depressed people are hardly ever capable of that. That's why people who constantly whine piss me off - it's not real, it's fake, and it's extremely annoying on every single level.