I'm a Christian who believes in evolution (i.e. RM&NS, abiogenesis, and common descent), though I hesitate to pidgeon-hole myself as a "theistic evolutionist."
I find it interesting that an otherwise blind, selfish process like RM&NS gives rise to things like kin selection, altruism, and cooperation. That is, having shared genes promotes a kind of universal utilitarianism. In fact, we can as humans can and do sacrifice ourselves in situations where we derive little or no genetic benefit.
And as for the "dark side" of RM&NS? Well, I guess the Zen side of me realizes that (in this world anyway) suffering is inevitable.
-Neil