Reasons to leave: I cheated on him, with a woman, and I am pretty sure I'm a lesbian. I don't look forward to a future with him. I'm bored by him. He deserves to be with someone who loves him properly.
Reasons to stay: he's a wonderful, kind, loving husband and father. We have been together for 15 years and we have a great home and family. He works hard and puts me and our kids first. He's attractive and he takes care of himself. He's a generous lover. I've been very honest with him about the cheating and my sexuality and he still desperately wants me to stay with him and make things work. He will be absolutely devastated if I leave. As the lower earner he will be considerably worse off. He's putting effort in to improve our relationship now, communicate better and not sweat the small stuff (previous fairly minor issues we had). He's even agreed to opening up our relationship on a trial basis so I can date women. He loves me, he knows me, he still wants me.