I’m too cheap to get anyone else to do it. Plus, and it’s a big plus, I can experiment with materials, construction methods, etc. without having too much $$ into it if it doesn’t work (goes back to being cheap).
edit: I should add that I love the shaping and design aspect of it. I also have a love/hate relationship with glasswork. I think both epoxy and polyester resins are some of the coolest chemicals out there, to go from a liquid state to a hard plastic that seals and gives our shapes a nice, hard shell. That said, I don’t mind glassing my boards, but it gets tiring glassing someone else’s.
I like experimenting with design, fin types, and fin placement. Plus I have found that sitting at a computer for 8 hours a day and then going home to play in the shaping shack is like meditation at the end of the day. Also it is nice to work with your hands and see a finished product that you can surf later on.
I have also learned that with each board things are getting better and better.