Sure, send armed cops to handle situations that force is likely to needed. But cops don't need guns to take down police reports. Rape victims don't need armed officers to take down police reports. Property crime victims don't need armed officers to take down police reports. Officers do not need to be armed to write speeding tickets or DUIs.
The primary role of police is observation, recording of facts and interacting with the community. 90+% of the time they spend serving society do not require force.
We could spend much less on police and have better trained cops when force is actually needed by not even considering arming the half of cops who respond to situations where force is unnecessary. The unarmed cops can cost less because they don't need firearms training and job would be less mentally taxing so they could be paid less: then, they can call in armed cops for the minority of situations where force is necessary.
Only give guns to the best cops: the bar to become a cop is way too low to continue arming all of them. I'd love to see a tiered system where cops have to be continually tested and trained to prove they should be entrusted with various levels of force: ex. Camera -> Authorization to use force in arrests -> Pepper Spray -> Stun Gun -> Firearms