Damn dude, that's just a tiny bit harsh. Why don't you tell me how you really feel? Also, why would my mom go back in time to get cancer? That makes no sense to me. If you were hoping her getting cancer would prevent my birth that wouldn't work. You can thank advances in medicine for that. And finally, I'm glad I only "seem" that way but that's a matter of perspective and opinion, yours of which I don't care much for at this point.
tl;dr: Pop a pill to lower your blood pressure, stfu and chillax dude.