It's not a question of Pick Vs. Fingers to me,But a question of utilizing both well.
The music I play entails use for both but on seperate songs(For instance on Bert Jansch's Angie I would use fingers whereas on say Black Night by Deep Purple I would use a pick)
I couldn't imagine using a pick for the early country blues artists of the 20s and 30's for obvious reasons that its though rhythm would frankly sound a bit weak and mellow with the pick and you can't really use flexibility to your advantage.
But then hard rock such as Deep Purple or Led Zeppelin it would be best to have a pick.
So I really find both to be useful, I enjoy both musically.