Human beings didn’t evolve to spend 100% of their time staring into a webcam, only interacting over Zoom. Remote is great and should be part of the solution, but sometimes, you just can’t beat face-to-face.
I'm not sure what you mean. In people who sit for long periods of time the gluteus mucles (buttocks) become atrophied. Do you mean the ass fat is useful for sitting?
Maybe you're just making a joke and I'm not getting it.