Seems like the easiest way to meet people in the right age range, looking for the same things you are. Your ex sucks, but she’s a one-off, not representative. I think also that you have a lot more information now about what you want and don’t want than you did after losing your first wife.
Do you ever peek into Off Topic? There’s been an interesting conversation in the Fatherhood thread about “cleaning up after” and communication in marriage, and I’d love your input. It also starts with an article about women opting out of relationships and preferring to be solitary. Here is where it starts: The Fatherhood Thread - #445 by BrickHead
I completely understand if you don’t want to set foot in it, so no pressure whatsoever!