Oh, piffle! If your husband started having an affair with say, Lisa Ann, moved in with her while still coming back home to visit you every couple of weeks or so just to keep tabs on you and bark orders, and insisted on ruling every aspect of your life (or death), has children with her, and you're telling me Lisa Ann and their children aren't a "conflict of interest" precluding him from having your best interest at heart? Oh, and add to that, you suddenly win the lottery and he controls all that money because in the interim, you've had a stroke and become sort of disabled. Now, he is filing petitions to euthanise you because you "would not want to live like that". Since you can no longer speak or write and are weak and bedridden, no one knows for sure how you feel. Not to mention that "conflict of interest" IS a matter at the heart of the law on guardianship of anyone.
WOW. Can you stop and breathe? You didn't offer a coherent point to follow. Sorry.