<human>: Can you provide a brief rundown of the text in within 3 sentences?

Just a little background, I [m39] married my best friend [f38] 12 years ago, and little did I know that she was a serial cheater. She's slept with or has had extended relationships with a number of my good friends, or husbands of her best friends (or both), leading to a complete loss of almost all of our friends.  She now has no girlfriends left, and I have few guy friends who I would trust to not sleep with my wife.  Her therapist has said she has a "Love Addiction", so she started going to SLAA meetings, which has helped her try to understand why she is the way she is.  She claims to still love me, and she wants to still be married, but I don't know if it's sincere considering her actions.  

To make things more complicated, due to a lot of the guilt she was having over the past few years, she started drinking a lot, and became an alcoholic, which is something that runs in her family.  She's 24 days sober, and is attending AA regularly. Unfortunately, she hasn't wanted to have sex at all since she's been sober. Naturally, I feel like she must be so unattracted to me that she has to drink in order to have sex with me.  But she claims it's just a negative side affect of her sobriety. I'm willing to give her the benefit of the doubt for the short term. 

I feel like the crux of my problem is that I'm terrified of divorce. We have 3 young kids, and nobody in my extended family has ever gotten a divorce. I've never been exposed to it, so I'm completely terrified of it.  I don't know that any other man would have stayed with her under these circumstances.  I probably should've left her after the first occurrence (8 years ago), but I didn't.  Now I'm in worse position because of it.  

Reddit, I'm just not sure what to do.  Do I stay with a serial cheater hoping that she'll never do it again? Or do I face my fear, and end it now?  Or something in the middle? Really struggling with this decision. Would love some advice.
<bot>: My wife can't stop cheating, is an alcoholic, all our friends are lost, but I've never been around divorce and I don't know what to do.