I would hope that your son's needs far outweigh your husband's. Like others have said, he is an adult, making adult choices he has every right to make, even at the expense of your well being, and the well being of that precious little child. He has places to go.. he could go to rehab, he could go to free rehab thru the Salvation Army, I have.. He could stay in a shelter, or on the streets if that's his preference over a plan for recovery. This is not your burden to carry. Why continue exposing your little boy to the insanity of addiction, when it's within your control? Like Dolly said, you are his voice, his only chance at a beautiful life.. please think about his needs over the selfish and sick actions of an addict. If he never falls, he'll never have to get up.