You are not the first person to have these questions. In his autobiography, Lewis discusses confronting this very issue. He answered it to his own satisfaction (and mine).
I'm inclined to consider very seriously the reasoning of a man who pulled off the "hat trick" of Firsts in Honor Mods, Greats, and English.
Some of these questions are a thousand years old.
I have found my own answers, but it’s like climbing a secluded mountain to find others at the top to greet you...