sqad, I didn't quote you exactly but I admit I was wrong to suggest you meant all men when you said most.
I would consider all the men I know to be a decent reflection of males in general, of course, we can only go by what we know, I know some dirty sods who'll dive in anything, I know some lads who've had drunken flings and got away with it, I know lads who've had them and regretted, I know men who couldn't cheat no matter how hard they tried and I know men who just don't because they have morals and I'll comfortably stand by my statement that the majority of men don't actively seek other women to have on the side and the majority of men don't have women on the side.
I'd say the majority would have women they'll regularly flirt with, that they'll get attention from to keep their ego going, just as I reckon the majority of women do, but most people have the capacity to control themselves (which is why alcohol is often the game changer).