I can certainly tell you what job I have now and wish I didn't have: Disconnecting people's electricity. When the local power company gets behind, I get to help "catch up". Thank God I don't do it 40 hours a week, because it wears on the spirit, so to speak. Normally, I do IT work, the whole gamut from networking to computer repair to writing HTML and being the "help desk".
If I could, I would like to plant trees, starting back when I left home. That would be 40 years ago, it would be great to see what those trees would look like now. I have some hickory trees planted out at a public place, but I will never live to see any nuts from them feed the squirrels, as it takes some of them 40-50 years to mature that much. If I got a job planting trees in 1978, they would serve as a yardstick of my life, so to speak. They would also be there when I am gone. There are few endeavors that one can do in fifteen minutes that can last 150 years. Planting a tree is one, though...I just don't know how one makes a living being a modern day Johnny Appleseed. He was actually pretty wealthy at the time, since he claimed land at the edges of civilization and sold it later when settlers came behind him. One of his trees is still alive in Nova, Ohio.
I would also like to work full time at the local homeless shelter. It seems more real than anything else I have done...and I don't know how to explain "more real", except that everything else seems less important, I guess.