While writing, it occurred to me that this might be the primary effect. There appears to be some sort of counter in my head that counts awesome comments. There is no counter, however, for number of awesome users, or number non-awesome comments. I ignore them without effort. But due to this selection bias, the awesomeness counter gets to such a big number that it's quite overwhelming, and it feels that 100% of comments are awesome.
I suppose I can accept the fact that the majority of people don't represent anything to get flustered about. However, there are people way more talented than me, doing much more important-seeming (that is to say, things that are getting more attention) things, and in general just being more successful than I. I truly mean it when I say "good for them," but it eats away at me. Quarter-life crisis I suppose.
I was on this site as a different name over a year ago and have recently returned. I can tell you that I noticed a pretty significant difference in the quality of users now on this site. There are more low/medium quality comments, and the quips aren't as clever. What's more concerning is the upvote counts on those comments...
That being said, there's no other place I'd rather be.