Hope these previous threads can help:
https://www.nappyvalleynet.com/communit ... 93&t=69996
and
https://www.nappyvalleynet.com/communit ... 15&t=48161
I think there are two elements to it.
The majority (not all but the majority) of men will watch ******, that is something that the threads here seem to agree with. However that's very different from addiction and from it leading to a breakdown in the family.
I suspect, and I am not qualified at all, but I have seen similar things with friends, that he is very depressed and this was an outlet. But you have to look after yourself and your family and if he was unable or unwilling to seek help then you obviously can't let it take over the rest of your life.
I also think you need someone to talk to about this - can you have some therapy? It may be a good idea with everything going on anyway.
I'm not sure I would tell my solicitor as I'm not sure if it would be useful but others may disagree.
Good luck!