Explain to me ANY situation where more training is harmful. I guess I don't understand why there is even a discussion. People do drugs. And?

It doesn't matter if a person doesn't feel pain, if they are immobilized. Present a single scenario where an officer having more of an ability to control another person would be a detriment.

What I'm heading so far is, people do drugs and don't feel pain, so police shouldn't carry tasers.