Confused

This is mainly directed at all of my male friends. Steve Harvey said a man cheats because he can and because there is always a woman willing to be a participant. From past experience I can say that is true but fellas answer me this: If a man is getting everything he needs at home (dinner, clean clothes, good loving, holding down the bills when needed, etc) why step out??? I mean really, why go elsewhere? It's so much harder for a woman to recover from such a cruel blow. I mean, honestly, I have thought and looked and tried to figure out what it was about me that made him go elsewhere. I've had friends (male and female) tell me that it wasn't me. That it was him. On some level I believe them, but there's still that little voice that says there was something about me that wasn't good enough. Past all of that, what do you do when the cheater wants to work it out???? How can I as a smart, well-educated woman want to subject myself to that again? I realized so much once I became single again. Like, I had lost myself in him. My opinions and thoughts didn't matter. There was no compromise. I was slightly brainwashed. I felt myself becoming one of those women who end up in those relationships you see on Maury. Being told what to wear, constantly checking in, constantly explaining myself. It was the grace of God that made me realize that this is not what I'm supposed to be going through. I took the relationship as a learning lesson of what NOT to accept in the future. This may not make sense to some...I know I've rambled and switched topics more than a little bit but I just had to know...why would a man cheat on a good woman??????????