I agree with everyone, been there done that. After 38 years together, I could only imagine the crxp he has pulled and all that you have been through.
Tell him you are attending your own meeting; that you need to attend, because of his "addiction". haha!!
You attending or not attending is not going to jeopardize is sobriety. You don't have that power.
Good luck in your decision, you are not wrong in either choice you make.