If Dubya had no backbone, you'd be hunkered down in your basement right now, cleaning your gasmask and taking your anti-anthrax pills, after having snuck out to bury your dead from the latest terrorist attack.
Sorry. You may find things to criticize Bush over, but lack of moral courage is not one of them. He does what he believes is right. You, apparently, just disagree with him on what is "right" is a given situation. Leave it at that.
I don't hate Bush, but I don't worship him or try to make him out to be a conservative icon either. You are welcome to try, but you end up fighting against W himself.