Am I imagining things or have almost everyone I have seen or met recently fallen into a dark pit of misanthropy and self-loathing?

You should smile more often or your facial muscles will freeze in that sulk forever (something that is yet to be medically proven, but it happens). That would not be a good thing (for other people, that is. Enjoy it as you may, other more cheerful folk should not be subjected to seeing your anger-knotted visage on a daily basis)

Do yourself – and all of us- a favor; smile, will you?