Are There Any Other Objections to Contingency Arguments?

In your book with alexander pruse, called necessary existence, you cover a lot of the standard objections to contingency arguments. What do you think caused the shift from leading defenders of atheism, like j l mackey and j h sobl, rejecting the idea of necessary beings, to now people like grandma pe accepting it? I'm not sure. Yore's a theory yet. Os wat, costs and benefits. They've got another question, so i'll put that one on the screen, and then we'll close it out.