I've always worried about that. I can't imagine having my wife come home and finding my dead body on a bench with a bar across my neck. I've benched well over 400lb at home completely alone, but I have metal sawhorses that I use as racks. I've dumped 400 on them and never had a problem.
Currently training for single ply competition.
Single ply gym PR's at 242-
555, 435, 525, 1515