I would guess that most people who live in houses don't know what hole saws are. Your assumption that everyone does -- or even needs to -- comes off a bit arrogant and out of touch.
Do you just have "handymen" do everything for you? Do you only interact with your physical environment in superficial ways?
But "living in a home" and "homeownership" are not the same thing. Everyone has to learn something at some point, people aren't born holding hole saws.