I didn’t want a divorce... but here we are...

My husband and I have been separated for nine months. This happened shortly after I discovered he’s been having an affair for almost a year at that point. I was willing to forgive him and move forward in our marriage if he broke it off and we went to counseling. He chose to leave to be with this woman. I know I don’t deserve what he’s done to me and I am certainly within my rights to file for divorce. I’m over it, i accept that we are where we are, but I’ve been struggling with what my next step is. We have a few more months before we can file for an uncontested divorce, but lately I have been feeling like I want to file for an at fault divorce for his affair. I don’t want him back, but I didn’t want this divorce either (ugh... life right?). If that makes sense? I just don’t know which route to take with this divorce.

•We do have a toddler together

•We do have a notarized child support document (nothing with the court yet though)

•All assets have already been divided/dealt with.

What big benefit is there to a fault divorce on grounds of adultery?

Pros/cons?

Any help would be appreciated.