welcome to SR!
you sound like an independent, strong woman. you have every right to be angry and feel the way you do, and you know what you will and will not accept. i think it is obvious to yourself that you will no longer accept the craziness that goes with being with an active addict.
he is choosing his path, and you must choose yours. what is best for you and your children. (who he gave up rights to by being on drugs)