Most cops are human and if you're polite and respectful to them they will want to let you off with a warning.
Imposing your will on others feels good, plain and simple. It's
very human to enjoy and feel a sense of satisfaction when you force someone to do something, just like a player feels when he makes a goal or scores a point when the opposing team is busting their ass to prevent it.
This
is normal to feel this, and it is easy to find yourself doing it for the wrong reasons. Especially for cops, because there is very little accountability for this abuse of power. I saw it with NCOs and officers in the army, and I have seen it with LE.