If you base it on the argument of why are there still monkeys today, then it should also apply to why aren't there any new species being created out of nothing? Curiously, it seems that we don't have any new magically created being out of someone's abdomen. If you compare the two versions of how we came to be, there seems to be no actual proof that we all came from the same parent. And that makes our entire race incestous if ever right?