is like kissing
I like to do it, even though I suck at it.
At first you have to learn things, clumsily at times, like where to put your hands. Then you think you have it figured out, only to learn you're still fucking up.
Kissing and playing guitar are often the precursor to better things. For playing guitar, or any instrument, it might be forming a band. For kissing it might be anything leading to an orgasm, or just lying there with someone you love.
Gratification comes from both...