Am I the only person that learned to shoot off hand first?
No you are not the only person. We are just getting spoiled in our old age. Easyier to sit. Whenever I move a bench out of the way to make room to shoot sitted, prone or standing the RO's give me a funny look like I am about to do something they won't like. Public ranges are just not designed for it, unless during a competition, then it's normal.