I've voiced an opinion on this subject on another thread, but where and when escapes me at the moment. For the majority of most departments, it is a liability issue. The folks that make up and oversee the guidelines for officer use of force matrix are lawyers. It is far easier to justify use of deadly force, then it is to offset the ever popular "police brutality" allegations. Don't think so?, The officer claimed that the perp made a move into his clothing or the perp looked to have something in his hand that looked like a weapon............so officer is now justified in the use of deadly force. Now take that same officer and same perp and instead, the officer physically knocks the living crap out of the guy. Next scene is in court, with the perps lawyer and the perp has a broken jaw, broken arm, multiple cuts and lots of bandages and the lawyer has just made reservations for his new trip to the Islands.
Leo's are taught and directed to "control", therefor there's no training for the real world knock down and drag outs. Most Leo's get hurt by their own people, not on purpose, but rather due to the "dog pile", -- cops on top of cops attempting to control the subject, only getting in each other's way and causing injury to each other. Tazers and sprays cost money and they also have their own downfalls. Tazers have caused deaths and sprays can spread to far and even backfire on the one using it. Some folks, sprays have little effect on also. But, since this is how the majority of Leo's are trained, they inturn become dependent on departmental procedures and the tools they are allowed to use, thus leaving a huge void and showing that most cops couldn't really fight their way out of a wet paper bag. They become totally dependent on "numbers". When an officer gets seriously injured or worse, the investigation shows and we've even seen it on the TV show "Cops", that the officer attempted to use control techniques on a subject, with no "backup" and inturn, suffered for this action. Until such time as the powers that be realize that Leo's need real fighting skills and are willing to mandate and fund it, we'll still be here, venting our frustrations.