A world without "you"

Probably wouldn't make that much of a difference if I was alive or not.. Why should I care so much? I am a simple person, as it has been shown the rich love to trample the poor, one useless little pawn like me won't make a difference. Unless your someone like Stephen Hawking, Rupert Murdoch, or someone who has done something remotely 'interesting' in life or helpful to society...(the wheel comes to mind for some reason) it probably won't matter if you never existed.

I sound so very morbid, but eh.

You know, that... I've though of it many times, what if the person that discovered something in this timeline went poof before he discovered such thing? Who says someone else wont do it? maybe 1 year, 10 years or even a milenia later, but it could happen, and since we hadn't it before it wouldn't affect us so much.