Has anyone ever called 911 before?

I have called a few times. Most recently I called when some girl hit my car on the freeway. I called because I was just on the border of 2 cities and I figured 911 would be the fasted way to get police out. the other time I called was when I saw a car accident and this guy, who was in the accident, was blocking 2 out of 3 lanes on the highway. I was late at night too, so I wanted to call it in so nobody would come around the curve of the road, and hit him in the dark.

Yes, I have called 9-1-1. I witnessed a fight that left a man with a badly broken leg and the guy sped away. And I called 9-1-1 when I was out delivering pizza's once. Two older whiteguys came in with two younger black girls, around the ages of 12. They put the girls in the back seat and drove away from the building but not out onto the road. It was after 11pm. Just looked fishy to me and the car was a big Cadillac. I'd do it again if need be.

I have twice. Once is was a noise complaint and other time I was in the car with my mom and son parked in a parking lot and some idiot drove into the parking lot too fast, hit a puddle, lost control of his car and hit us. I hate calling 911. I feel guilty, no clue why.