i use the home keys but i've never actually used the Home key
you know, between page up and insert?
i actually don't know what it does. same with scroll lock, and the pause/break key. which both sound pretty forthright, but don't do what i expected them to
but beyond that i only use the home keys because that's just where my fingers usually are on the keyboard in the first place and if i spot an error i usually just backspace all the way back to that point, then re-type from there (because i type fast enough to bridge any cognitive gap that would have created in the first place)