Quick survey?
Would you rather hear a friendly "good morning" if being passed, than a gruff "on your left"? A friendly greeting is always welcomed, but honestly, I'd be happy with any warning over getting buzzed.

Do you enjoy talking to fellow commuters for a few blocks if we're going roughly the same pace? Yes

I you happen to get passed, is your manhood/womanhood intact? It depends. If you just passed me, and gave me warning that you were going to pass me, or gave me a decent amount of space, I always share a pleasant greeting/wave and it's all good. My bike is heavy, and my commute is long. If however, you buzz me, don't say anything, and generally act like a tool, you had better be prepared to haul ass so you don't get schooled by a dude on a bike with fenders, a rack, a mirror, an air horn, and several other "Fredly" items. Especially if your the kind of rider described by the OP that half wheels, or generally rides like an idiot. Man I hate that, and the situation often gets the best of me. If I don't have the legs, or it's early in the week, and I don't want to be shot the next day, I'll say something like "On your left goes a long way". I also call out riders that run lights at intersections that I'm waiting at. Aside from that, I'm a super nice guy!

If you pass someone, is your manhood/womanhood the same as before? Indeed.