I really understand where you're coming from - we're all taught that the bench press is the measure of a man and then we get to where we really enjoy the lift - two things that make dropping it really difficult (trust me, I loved it too).
Replacements would depend on what your goals are. I don't know anything about your history, progress, or future intentions.
But whatever your goals are, the choice is really up to you; if you're just lifting for fun and staying healthy and active, then I would basically suggest doing whatever doesn't hurt. If your pec is the source of pain, then I would suggest moving the emphasis to shoulders with some tricep assistance. Honestly, I don't really see any point in chest isolation exercises if you're not a bodybuilder (and by bodybuilder, I mean one that competes, not someone who just wants to take AAS and look big). And trust me, OH BB presses are sooo much harder and more impressive than bench; people who bench 235 are a dime a dozen, but people who can push 235 overhead are fucking men.
Moving focus to more functional areas (e.g. back, shoulders, posterior chain muscles) will not only make you stronger, it will greatly reduce risk of future injuries.
Plus, who looks bigger/stronger/better: a guy with a wide, thick back and massive delts or a guy with a regular back, average shoulders, and pecs that obscure his view of his yogurt-slinger?? I hope you pick #1.