How okay would you be with your children's father becoming a total stoner?

I need to finally ask this somewhere. My husband almost never smoked before our (planned)pregnancy. He says it was the anxiety and huge change. By the time I gave birth he had started going to my ultrasounds high and was smoking out of a bong multiple times a day. He would sometimes go outside for 30 minutes multiple times a day. I understand that he was stressed and that weed isn't that bad but his behavior reminds me so much of an addict. He acts like he absolutely needs it. He has an extremely difficult time quitting or cutting back even though i've begged him to and i've picked up all the slack. He spends a ton of money on it and for the past 5 years now I have barely been able to talk to him unless he's high. It feels like he emotionally abandoned me. He is also sneaky about it. I kind of stopped caring. He is well off and we live separate lives and we are pretty much roomates.

I feel like I'm married to an addict but I'm not allowed to feel that way because it's weed. I need to know how other moms would feel about this?