Aikido: What's With The Flips?

And Uke flipping after

 I've seen a lot of people criticize Aikido and claiming it as ineffective and unrealistic. This comment just shows how the ignorance of some people of the martial art they are criticizing too. Aside from the so called ineffective moves being performed, they also dislike the idea of the uke (The attacker) flipping after the defender performs a certain technique. They claim that in a real life situations, the attacker would never flip like that. Well, this is one of the more educated points these Aikido haters came up with. The whole point of the uke flipping over is to avoid any injuries. The point of Aikido is to defend yourself only when necessary and to also avoid hurting your attacker. Sure in real life they wouldn't flip, but their natural instinct would be to follow wherever their wrist or fingers are bent to. The flip is just taught to let the practitioners go with the momentum. The natural instincts of someone's hand being bend in the wrong direction would be to follow where the hand is being bent to lessen the pain. With the pain being lessened by leaning back to where your hand is being bent to works, than a flip would certainly do a better one.