I would say I enjoy the most from the continuous if not complete focus and diversion of it. The more technique you learn, or even experiment with, the better the feedback. Prolly from foos endorphins, like the rush with a loud slam dunk over outstretched defenders (bball), or a perfect strikeout pitch in a corner of the strikezone (smallball). The rush from passing is like the qb throw and acrobatic TD catch or completed pass, (or the mack in footies) leading to continued possession and play.
Plus the thrill of getting out of the house and doing something that has absolutely no relation in this solar system to anything done at home or work. And oh yeah, pretty barmaids, foxy bartenders and talking trash with fooz buddies.
I don't however, get any buzz or thrill from continuously and regularly beating up on lesser players, which quite a few foosers I've known over the decades seem to really delight in. Too much human for me.
But then again, I might just be a reincarnated observer from some deconstructed deathmetal planet called Havoc Primeval or something... you never know... might've seen too much domination, subjugation, and abomination already, is all....