Im not being an asshole to anybody. Leaving aside the worldwide practice and the contradicting reasearch which people seem to just disregard when their personal experiences and biases weigh in, just like you have your own reasons for your strong bias that made you continue discussing this topic this heatedly (in your words), I have my own reasons too. I know various apparently-successful and 'well-adjusted' adults who were neglected as an infant. Only the people who are close to them can know the problems they face and the difficulties they have to go through. Its no joke. Its not difficult to conclude from a modicum knowledge of psychology and such first-hand cases that leaving alone an infant in its crib would easily do more damage - without even going into evolution, mammal species' behavioral traits or anything else complicated.

But as I said, we discussed enough. I replied out of courtesy one last time. So you too have a nice day.