Toxic friends are truly awful. And you're absolutely right. We need to get as far away from them as we possibly can!
Stuff that goes into taking care of you, is not "silly!" We're not robots, we're human beings. (Yes, you!) And if you think YOURS are silly, remember... there are probably always people out there whose hobbies are even sillier than yours! (I'm very probably one of those people.) If other people don't like it, they can grow a handle-bar mustache and get themselves a top hat and a monocle, and practice sombre and disapproving faces in the mirror till they grow too serious even for the mirror. But I doubt very much they'll have any fun that way. :p
But honestly, everyone needs to take care of themselves, and do things sometimes that have nothing at all to do with stress.
Glad you're alive, and hope you stay that way! And like you said... never be sorry for taking care of yourself, even if it's just surviving! And here's hoping the rest of us can learn to take that advice, ourselves!