Good luck with whatever you decide to do, reinvent.
With a couple of marriages under my belt, and my kids out on their own, I think I've settled into "selfishly single" mode myself. I have female friends who are "activity buddies" (non-sexual, in case anyone is wondering), but I'm not interested in a relationship or getting married again. And I really love doing what I want, when I want, with whom I choose. It would be really difficult to give that up...
Married men supposedly live longer, but, as Bill Maher says, "So do indoor cats." lol