I know you want to think, or have been told to think that the reason this happens is because they need more cops.

Brother let me assure you, more cops will not help. I have lived in cities with more than twice as many cops per 10k. Both times I actually needed one it took over 3 hours.

They were never intended to provide basic safety to you in your home. That's your job. Their job is to deal with what comes after that.