Why do people drive more like idiots in the morning?

Driving in to work today at least 5 drivers did really stupid stuff in front of me. I had people pull out when I’m way too close, turn left in front of me when I’m 30 to 35 feet away (I shit you not on that. I hit the brakes and flipped her the bird. Her kid is in the passenger seat. So I flipped off a 5 year old) and everything else you can imagine. Why are people so stupid in the AM? Is it worse in the AM?