If I expect heavy traffic in the lot when I leave, AND I can pull forward into the spot from the adjacent spot, I will do that so that I can turn straight out and go.
If traffic in the lot is currently hectic and I would have to go through the multi-point turn exercise to back into a spot, I won't do it. Seems inconsiderate to hold up traffic for mild personal convenience.
If I don't expect major traffic when I leave, I just pull on into the spot forward.