A friend once said to me, "You're 'spotphobic'", because I would actually wait for him to come over before I'd do any benching. Then I pointed out that something like 500 people a year DIE doing bench presses without spotters! Not to mention all those who just get hurt. You should have seen his face. And if you've ever been trapped under 240 pounds alone in the house, you don't just feel pretty dumb, you also spend ten minutes trying to wriggle out, and end up twisting your back all out of shape. Then I had the pleasure of laying around for 3 weeks and shrinking away everything I'd just built up over the past few months while I waited for it to heal. Moral of the story- if you get injured, you'd have been better off just being a couch potato to begin with. And I won't even go into what I did to my shoulder while just being a tough guy and working out when I was tired and unfocused. So stay safe!