I've witnessed the result of someone not being visible to a taxying aircraft being hit, "almost certainly directly as a result of them not wearing the hi visibility clothing" (the coroners words, <himself a very experienced G/A pilot>, not mine).
It wasn't pretty, and it took a long time to find all the pieces.
I agree that there is a time and place "to be see and be seen", and that is anywhere between the aircraft and the non airside area, because that is what hi visibility clothing is all about.
What really pisses me off is the arrogant and self centered attitudes so freely expressed in this post by the "It'll never happen to me" club members, no doubt you fly in the same reckless manner with no thought to anyone else.
I certainly hope it never does happen to you, but it appears that the only way you'll learn will be if it does.