Very interesting indeed.

I would have never thought that the action of resting your own weigh in different surfaces would mean different things. Also, I'm sure there's a historical reason for that (whatever that may be), since even arbitrary rules as they may be, have to start somewhere, and it would be interesting to see where this one came from

I also agree that ignoring those rules and achieve personal fulfillment is more important. Nonetheless it's funny how different sports' rules compare to each other, i.e. "you can't rest your weigh on your equipment" vs "you can't touch the ball with your hands" or "you have to run to this mound first, and then this one, and then this one"