I agree that it is a personal decision. I know that for us living with addictions of any kind, we can doubt our decision making, so I expect that the decision, whatever it is, takes a while to reach.
Here was mine......My RA's addictive behavior was romantic with other women. That's not something I can accept. Period. End of story. Disease or not. We talked about it, argued about it, broke up over it. Were apart, and discussed it at length.
Gave it one more shot. Behavior was the same, so I was done.
But in the end, everyone has to make that choice for themselves. I think sometimes that aspect of it is harder than making the decision itself. Hope that helps.