It think your path as to what to do with the business should be directed by your accountant and attorney regarding a financial division in divorce. If it were me, I'd take what I could negotiate and get out while the getting is good. We know Alcoholism is progressive. While he has been able to maintain with you there, there are no guarantees he will continue to maintain (in fact the statistics would say he won't be able to down the road) even with you behind the scenes.
As for your future - what are your hobbies? My career came out of a hobby, many I know have this same experience whether it be their initial job or something that comes later. Its a good place to start when you are doing something that you love. Clearly, you have the skills to run a business.