For the Road Warriors: Why are Burnouts in Drive a Bad Idea?

I used to do burnout/donuts in the parking lot. Get the tires cooking then crank the wheel over, go round and round until the car filled with smoke, then crank the wheel the other way. Made nice figure 8 marks on the pavement. Left it in drive and it went back and forth from 1st to 2nd. The old 383 didn’t have enough hair to hold it in second, it would bog down and downshift. Never hurt the 727 as far as I know. I was a dumbass but it was fun