Actually, because Terri is alleged to have said that is what she would want him to do, and da judge decided it was so. Her birth family disagrees with the judge and the courts, all of them.
Either Michael is the most selfless and devoted husband this country has ever known....
Or he is another lying, manipulative sociopath who has used our "wonderful" court system to sanction a killing
And that is one of the major reasons this fire will continue to burn long after it should have burned itself out.
I think it is a fight for control between him and his father-in-law.