It doesn't take much to kill deer with a SHARP head, well placed. I just tend to want as much KE out of my bow as I can handle efficiently, so if I can comfortably draw the weight, I do.

There are several reasons that I would NEVER fingershoot a modern compound bow. I started out finger-shooting traditional bows when I was a kid, then when I bought my first compound, I didn't know any better, and stayed with it. A local competitive archer loaned me a release and my 20yrd groups went from a palm sized ~4" group down to stacked sticks with 2 broken shafts. Finger shooting a modern compound bow can also be a dangerous game, it's all too easy to torque your string as you draw and cause a derailment. Creep up on your cam and a compound can rip the string right out of your hand (you couldn't pay me enough to fingershoot my Bowtech Destroyer). I fingershoot traditional bows, no go for compounds.