Playing a lot of pool is a main factor in proficiency.
Home tables do benefit one's game, but it isn't all positives...I feel I have gotten soft in many ways, playing almost exclusively at home. I have my music, my equipment, my bathroom, my soap and paper towels, etc...
I am not sure how to define the experience, but when I go play elsewhere i often have a shit time, dealing with substandard equipment, people I don't want to interact with, no paper towels in the disgusting bathroom, keeping one eye out for myself and my equipment...and paying for it.