Backup camera can’t see around the cars on either side of you as well as you can peer around the corners. People also generally have an easier time reacting to things, judging speed and distance etc when looking at it directly, not through a screen.

At the end of the day it’s really just personal preference. I’ll come out and say I back into spots when I’m driving my cool fun car because I think the car looks cooler from the front. When I drive the beater I just do whatever is convenient.