I do a lot of work with my hands and I always have. I think back to the first time I developed calluses where the base of my fingers meets my palm. I was very young and impressed with myself.
I remember the pride I had when I played guitar as a kid, and I developed calloused fingertips making them impervious to string pain. I’ve also had calloused feet as well. It’s all a part of building up a protective shell around over-used parts.
I find it interesting that some people don’t have calloused asses. How can that be?