Are you ever satisfied?

My 17 year old son was watching me work on my stereo the other day and asking me questions (much to my liking btw) about the turntable and some tweaks and stuff. After a while he asked "Do you think you'll ever be satisfied?" I did not have to think about my reply at all as I already knew the answer to that. I said "I AM already satisfied. I love the way my stereo sounds and if I could never do another thing to upgrade it I could listen happily the rest of my life. But I do enjoy tweaking it, working on it, and finding ways to improve the sound."

How about you?