My feeling is that if someone is turned on by the idea of having their body pounded and bones broken to no end, until at 40 they can barely move
You mean like Kano and Helio? Or maybe you mean Couture?
You don't like MMA fine, then just ignore it and the obnoxious people that think it is the only way to go. But please do not fall into the trap of false assumptions, stereotypes and unverified statements.
The only time I was seriously injured and was forced to stop training was from aikido.