I'll give you two answers to this that may seem mutually exclusive at first:
1) I never feed live to my snakes unless I'm having trouble getting them to eat dead and I recommend the same to everyone who will listen. It's safer for the snake, it's easier to deal with, it's usually cheaper, and since I can kill the animal faster and more humanely (frozen thawed, even better) than the snake, so much the better. I have, on occasion, fed live rabbits to a python but I would never post a video of it to rile people up.
2) The people who get riled up by those videos are just wrong. That's what happens a billion times a day on this planet, every time a predator eats prey. One of the unintended consequences of shows like the old Wild Kingdom (which I loved and still do) is that too many people think lions chase down a gazel, bite it on the neck and it's over. No blood, no bleating, no eating its genitals while another lion is still holding it by the throat waiting for it to suffocate. A python eating is pretty tame compared to some of the things that happen in "the real world". Half the people that complain about those videos (I'm not referring to you) probably have a house cat in the back yard chewing the wing off a live bird as they speak, but because they don't have to SEE it, it's not a problem for them... Unless they propose exterminating every predatory species on the planet or converting them all over to veggie burgers, complaining about a few people letting their animals do what animals do is just silly.
This concludes my overdue rant for the day...whew...
-----
What goes up must come down...unless it exceeds escape velocity.