First: I am a Christian. I can be a leftist and a Christian, (look up Dorothy Day) and my comment made no mention of faith. You brought that up and it says more about your worry or notions than anything else.
Second - “fun” because it is. They are both close in age with me, and we have great rapport with this stuff. Heck, the three Chomsky books my dad bought me last month say plenty.
Third: Reagan was a fucking terrible president and if I didn’t focus most of my history on how evil Kissinger was, I’d have more to write about ole Ronnie.