It depends what you want in life
Your negative experiences, I can understand, would make you lower your expectations
But really...is all you want for your future self meaningless shags ????
Not all men are faithless shits
I have a man who isn't a faithless shit, and he has had his fair share of opportunity/provocation
I think there are pro/cons either way
If I were ever to split up with DH...I would never marry again, but I would make sure I didn't miss out on sex
If you start a relationship though, with the premise that you would forgive infidelity, then what is the point ? Unless you are both clear it is an open one, then someone will inevitably get hurt
If you want monogamy, don't give up
if you don't (for yourself), then that is OK too
Just make sure it is what you want and not something you would compromise yourself for, to keep a fuckwit of a man