The disagree is because a bit of civility often prevents a situation escalating and also gives a fraction of a second more for the suspect to consider their position. @tearsbeforebedtime said, it seems that is the procedure in the US:
Sure sometimes it stops the situation from escalating and gives the driver time to reflect. My experience though is quite the opposite because most drivers I have encountered have a victim mentality and that the cop is only stopping them to reach quotas for giving out tickets or some other reason.
Now I'm not going to speak for Police in other States over here or Police in other countries, but I'll say here and now that we never had quotas to reach for the issuing of tickets. If I ever stopped a vehicle it was because a law was broken by the driver.
They usually get gobby after you return from running their plates and licence and insurance, the only reflecting they have done is when they've realised that not only are the going to get penalty points but they are going to have to pay the cost of the ticket and the cost of rising insurance premiums.