And when you back into a spot, you don't have somebody else driving into your rear end. You can also see better when pulling out of a spot, rather than backing out. I do this 95% of the time in my pickup.
Ok so now when you are backing into a stall you have to worry about both of the parked cars on either side of you.....
I have never had anyone drive into me while backing out of a stall (or even a close call for that matter).... nor do i believe I know anyone else who has...
also, from my observations, it seems to take longer for MOST people to back in, then back out....