Why do guys cheat on their wives?

As the title says, why do guys cheat on their wives?<br><br>I feel like its soooo common. And I can’t really understand why. Maybe I’m BSing myself but I think if I’m married or dating some I’m exclusive to them and I’m not gonna go find other people to cheat on with. I just don’t get it.<br><br><br>Edit: 2 Kids, 6 Months pregnant, 3 years married and apparently I’m not good enough because my husband cheats on me. I just needed to vent and thanks for the responses I appreciate the feedback.