Let me tell you my little family history about sanding. My father will be 73 years old this Dec. He's been doing (and still is doing) autobody for over 50 years. He was a painter for most of his career, and has taught me alot of the tricks of the trade. He was exceptional at laquer paint jobs. If you aren't aware laquer clear can bet wet sanded with 600 unlike urethane clears of today. I remember as a kid all sorts of chevelles, vettes, novas, 50's era chevy coupes (did you figure out he's a chevy man) showing up at his shop for paint.
I started helping him out in the early 90's and was baptized with fire (or sandpaper) in the autobody field. My first memorable introduction was a 67 Fury (aka ledsled) in the shop that I had to strip, let him prime, and then wet sand. He handed me 4 sheets of 320, 400 and 600 and told me to go to town on the primed drivers 1/4. Three hours later my hands looked like something out of a medical textbook. Sanding with the 320 ate my hands up. It was a joy to finish with the 600. My dad just laughed and said I would get used to it. Sure enough I did, but boy was it was a learning experience. Sanding sucks, but it's a necessary evil for a decent paintjob.