As an IT person, I am slightly jealous of people who can, at the end of the day, point at a physical thing that they have created.

At the end of my day I often feel that I have just kept the cogs grinding for another day. I do feel that my work is "important", and I'm good at it, and the money surely improves my quality of life, but it'd sure be nice to be outside sometimes in the real world digging a hole or planting a tree or something, not just the endless arranging of remote electrons.