None of those things are true.
It is about character.
A man who is going to cheat on his wife is going to cheat in his business and on his taxes.
Not really, I know people who have cheated that are otherwise honest (not condoning the behavior). I've never done it but damn have I felt the urge to screw numerous women while being in relationships. It's weird because you can see, even in meaningless dating relationships, that the urge appears when you are bored in your relationship. For me it occurred when I wasn't getting any.
I truly believe a sexually satisfied male will be less likely to cheat on his SO. Most women I hear talking about cheating reference a bad fight, boredom, less emotional closeness, etc as reasons for cheating. Most guys I know say "I was horny". Neither one is right but I can understand someone being horny and needed to fulfill that urge whereas I don't understand someone saying that their SO doesn't talk or hold hands enough and the remedy is having a dude lay some pipe for you.
One line I think sums it up best is from "City Slickers"...."Women need a reason to have sex, men just need a place."
