Why do men cheat (and women for that matter)?

I'm so beyond frustrated at the number of douchebag celebrities lately that have been caught cheating on their wives. In particular -because they're the most recent offenders - Balthazar Getty and John Edwards. 

You all know the stories: Balthazar Getty has been caught by photogs having an affair with Sienna Miller. She's topless, he's grabbing and kissing her, she's groping him below the belt... he has a wife and 4 children at home.  John Edwards was busted when pictures surfaced of him meeting with his mistress and the child he allegedly fathered with her. His wife, Elizabeth has been battling incurable cancer and supported him during his 2 huge political bids (for Vice President with John Kerry in 2004 and as a candidate for the Democratic presidential nomination in early 2008). It has also been determined that he has been paying off his mistress - likely with campaign dollars. 

Oh and then there's always Dean McDermott, Tori Spelling's sleaze of a husband who left not only his wife for the washed-up actress, but also his toddler son and newly adopted, infant daughter. 

I can't even begin to imagine what these women are going through. The thought of my husband who I adore and depend on so much touching another woman, loving another woman, leaving me and my son to start another family, it leaves me feeling frantic. To betray the person who has stood by you and given you children, it's the worst thing you could ever do to someone. For God's sake, leave your wife if you need to stray. Leave her and then go frolicking, but do not bring your wife down so low as to be your mistresses sloppy seconds.  It makes me shudder to think that a man could lie with another woman and then come home and get into bed with his unsuspecting wife.  I would feel so filthy, so nauseated, so totally insulted if my husband ever betrayed me like that. 

These men deserve whatever scorn and nasty karma that befalls them. I don't care what your wife did or didn't do, nothing would make stepping out explainable or forgivable. If you can't stand her, or you're that bored with her, please show her the respect of leaving her first. Do not insult her by going to another woman (or man, whatever...) in search of whatever you're missing. It's cowardly and low, and I have zero sympathy for these men who cry about how sorry they are (after being caught of course!), how it was a moment of weakness, how they were going through an awful time. I couldn't care less. Maybe it makes me a cold bitch, but that's a label I can handle. 

So to all you cheating men out there: I hope you're having a blast knowing that you've destroyed your family (whether your wife let you stay or not) in order to indulge in some extra-marital booty. You are a loser and a disgrace. A real man would never do what you did/are doing.