Instead of an addict finding help, or a poorer community member getting assistance, or a troubled kid accessing mental health services - they inevitably instead end up interacting with the police. It's both shortsighted priorities and not the thing police are supposed to deal with.
Unless people become tame and “just get along” police have to confront violence, like it or not.
Of course, we can improve policing. They can get trained better, they can learn to deescalate first. But they also need coöperation from the people they police... and that can take time.