I was watching this (mindblowingly awesome) SRV video and I noticed that the guy never uses his little finger:
I wonder if it's his habit or it is a legit technique to rely mainly on 2-3-4.
I guess it boils down to "the little finger is naturally weak, small and a crappy finger in general, but can you, should you and, in practice, do you excercise it until it's as strong as the other three?"
I am not a guitarist, but when I try to play it for fun my little finger is an endless source of frustration, and I'm wondering if I'm just using stupid fingering, maybe.