Why can't people exit/enter a car properly?

I once got out of a car to quickly and slipped (it was in the winter). The pointy edge of the door hit me right above the right ear. I had headaches for like 7 months. Most painful thing I have probably ever experienced.

About the floor mats. Same here.

My co-workers love to push my rear mats under the seat as they get out with their feet. If I don’t check, the next day they get my actual floor dirty. It pisses me off.