Breaking bones as in stress or strike? I got into aikido because of its control aspect without need to break anything but with deadly consequences if it got to that point.
As many have seen, I'm a woosy and a pacifist and would much rather avoid the confrontation. However, if pushed into it, Aikido has taught me to inflict excruciating pain with a minimum of effort and yet without need for splints, casts, or extensive recovery time. Just pure and simple fucking pain!
I suspect the most important thing I learned was how to avoid those situations that require me to demonstrate my superlative skills and elan.
Still, not many want to experience the pain of joint locks common to aikido in take down situations. I enjoy the fluid movements and dancing around my opponent while they try to figure out what I'm doing until its too late!
Even then, its my option to engage or disengage.
Semper Fi
Rocky