Now that I get it, I can acclimate to it and adjust my expectations accordingly. Then I won't feel hurt or disappointed anymore.
One positive to report: this is the first time in forever that I've gone through a grieving process without ONCE pondering how and when to cash in my chips. That's more significant than I can express in words. Maybe it's that I no longer feel I'm dragging everyone down with my presence. To drag everyone down, I'd have to matter (albeit in the negative sense of the word). And... well, an electron microscope wouldn't find evidence of that whole "mattering" thing. So I guess I'm in the clear. There's no need to make everyone's life easier by applying a drastic solution, because everyone is already doing just fine without me around. It's all good, now that I understand life better.