But hang on a minute. Plantinga, Craig, and Swinburne are not young earth creationists. They all accept evolution.
The reason I brought up young earth creationism is that I think it's just as irrational for these guys to believe in the inerrancy of scripture as it is for someone to believe in young earth creationism. On top of that, they all believe in the trinity, the virgin birth, heaven and hell, and all sorts of other things that they've got from the Bible and from the Christian tradition, and I think these beliefs are all irrational too.
But as Doug suggested, the main focus of philosophy of religion is about whether God exists, and not about whether Christianity is true or whether scripture is divinely inspired. So as long as they keep their personal Christian beliefs out of it, I guess their views about the existence of God can now be respected, whereas at an earlier time even their belief in God would have been considered irrational.
I don't mean to interrupt your conversation, but I think the trinity is in a class all its own. Heaven and hell, young earth, etc. stretch the imagination, but the trinity is simply impossible IMO. It's like saying 1 + 1 + 1 = 1. I'm curious how Plantinga reconciles that belief with logic.