With all due respect, you have no idea what you're talking about. Nobody says human beings came out of Africa 20,000 years ago --- or India for that matter. As for where the out of Africa theories come from (and here, by "out of Africa" are you referring to
Home or to anat. mod. human migration? Do you even know), instead of blaiming "feel good" tendencies, maybe you'd be better off looking at the fossil record. Do you think it's an accident that the earliest
Homo remains all come from a small band in South and East Africa? That later they're found in other parts of Africa, and then afterwards in the Levant and the Caucauses (Ubeidya in Israel and Dmanisi in Georgia) and then across Asia? No serious scientist questions that hominins evolved in Africa. And no serious scientist questions that most characteristics of A.M.H. evolved in Africa, even though there is disagreement over questions of gene flow. So I'm not sure what you're talking about.
why didnt i thunk that?!, - must be a rascist, and sit in the back of the class!
It's not my business to speculate on your motives, but your knowledge of anthropology seems lacking.