Hi @centre, it sounds like your husband is well placed where he is, thriving, and you are spared the hurt of his abusive behavior. You now have some breathing room and time for yourself. Why disrupt things as they are?
You will get the hang of taking care of the house, your finances, and all that. I never thought I would, but I have.
Maybe writing a heartfelt (undelivered) letter to your husband him about what he did in the past and how it made you feel would be helpful to you, let you clear the air, for yourself and move on.
I'm fortunate that my husband with moderate Alzheimer's is sweet and compliant, very appreciative. If I dwell on his past behaviors, it gets me nowhere and I'm not living in the present. I only hope our situation stays this way, but who knows?