E 11: WoManizer

Do most or all men cheat? I have heard a lot of confirmed stories about men (may it be straight or not) cheating on their partners. This overgeneralizes men being easy to be tempted.
Is this because of men's hormones? The male hormone is more active and easily fueled than the female's. But should this be tolerated?
Over the week, I have witnessed cheating in different couples. Some of them are couples who have been together for so long. Some of them are just starting. Do men really need to taste something new (even just for a while) while they know that they can still be secure in the arms of someone who loves them?
To be honest, cross my heart, I have NEVER cheated. When in a relationship, I close doors for people who can lead me to delightful temptation. That's why I have no idea why there are people who have the strength and shame to flirt others while existing in a relationship.
I have read this article about men's hormone being aggressive. To share some part, let me post here a part of that article by someone named Seantan:
"Men are born with a different sense of instinct that women are. Male hormones are much more aggressive than female hormones are. We must know that female hormones have their ebbs and surges in life much more frequently than male hormones do. Male hormones remain almost static in the male bodies for the major part of their lives. There are definite hormonal reasons that make men feel much more libidinous than women. Many women ask the real reasons why men cheat more than them. In a way, their hormones predispose them to do so."
The article also states that men have this need to have varieties in life. Men like to try new things; new clothes, new gadgets, new friends, etc. On the other hand, women prefer stability.
Should we excuse this huMAN nature? I don't think so at some point. Yes, we get tempted. We find someone whom we think can be better. But it doesn't mean we have to be unfair to our partner. Our partners trust us; everyday, we remind them that we love them. Yet, eating our own words only leads us to shame and downfall of our reputation. If we want to go test someone if he or she is worth the flirt, we should step out of our relationship to avoid hurting our partners or even both them and the third party. Because in the end, fooling around only shows how stupid we are in decisions, how unreliable we are in commitments, and how weak we are in our self-control.