I kind of like his politics and his morality, which in later years seems to have inclined in the direction of Christian Socialism, as he indicates in his last "Screwtape" letter.
I also liked most of the "Narnia Chronicles" except for two, One -- Prince Caspian's Chair, I think it was -- seems to sacrifice the plot and replace it with an argument for the existence of a supernatural world, based on analogy. Even when I was reading it as a Christian, this plot felt to me like cheating.
Another Narnia tale, "A Horse and His Boy," to me seems "Eurocenturic" and in fact excessively "English" in denouncing another culture for building its literature around aphorisms, whereas the culture of the story's good guys is based on epic adventures, the sagas of heroes, etc.
When I read this as a young Christian, it looked to me like a repudiation of Oriental literary styles -- even though the Hebrew parts of the Bible are based on them -- and an endorsement of Germanic warrior sagas, even though they were originally pagan.
In "A Horse and His Boy," I think Lewis -- the great defender of Christianity -- shows a preference for pagan Germanic tales to the Hebrew Psalms and Proverbs, as well as the Aramaic parables of Jesus. From the perspective of English culture and the Norse sagas that Lewis and J.R.R. Tolkien both loved, that's understandable. But from a Christian viewpoint, that's unfortunate. There's NO evidence that Jesus really was an Englishman, or thought like one.
Theologically, I no longer accept Lewis's arguments. I am heavily influenced by Christianity, and maybe in some ways I'm still Christian, but I'm quite materialistic about it. I believe the Kingdom of God needs to be established "on earth," not just in heaven.
And I don't think one needs to believe in a lot of supernatural stuff to follow God's alleged command as related by the Prophet Micah: "He has shown you, O man, what is good -- and what is that, but to do justice, and to love mercy, and to walk humbly with your God?"
I do find as I get older that accepting one's own "sins" and one's need for forgiveness -- accepting that God somehow has forgiven us for all our imperfections, and that we can forgive ourselves -- is essential to me in terms of retaining my belief that I can go on and try to build a decent life.
I can't believe that Jesus literally died for our sins -- this only makes sense if God is a God who still requires human sacrifice, I think, and that's barbaric. But if we accept what Hegel said, and Boltman later echoed, about "picture thinking" in religion, I think it's possible to see the story of the Crucifixion as an imaginative "picture" or symbol of the kind of forgiveness that Jesus rightly promised his followers in the Gospels. Which is needed to save all of us from OCD.
Beyond that, I look on Jesus much more as a prophet and a social reformer and maybe an enlightened mystic than I do as the "Son of God," and anyway the words of the Lord's Prayer and those of the Sermon on the Mount suggest we're ALL potentially "children of God."
Lewis often goes out of his way to argue for a much more orthodox, literalist interpretation which, rightly or wrongly, I just can't believe. OTOH, in many of his novelistic portraits of people in need of "salvation" and stuck in destructive ways of relating to themselves and the world, Lewis is very acute, not simply overbearing.