Who designed REM sleep?

I hate waking up from a distressing dream and still feeling angry/sad/whatever over something that never actually happened. Like, right at this moment I'm really ticked-off, and it's over literally nothing. Nothing real actually happened, but I'm still unhappy about it.

I can't even talk about what upset me, because it wasn't coherent enough for me to be able to tell the story and make any sense. (Other than that in the dream, I felt like people I knew were being judgmental about my sexuality, which, DUH, of course that would be upsetting.)

There isn't anything to process, there's no insight to be gleaned, it's just a bunch of leftover distress neurochemicals sloshing around in my system, and the only sensible thing to do is to wait for them to ebb, at which point I will feel fine and it will all seem a bit silly.

Right at this particular moment, though, I'm still all be-crabbified. And I'm awake a fair chunk earlier than I wanted to be.

BAH!