As the women above have also said, I am sad to hear of your husband's behaviour. Especially at this point in your life. All I can say to you on this one is to surround yourself with people who care for you and respect you.
I also reckon JulesUK is correct! If this was a male health issue I suspect more money would be ploughed into research and a cure. I also suspect that they would be recognised as disabled too with regards to our benefit and health system!
I have a rare form of endo, it is on my lung. For the last four years or so I have been dodging a hysterectomy or medically induced menopause so I can empathise with you on this. In my case, surgery is really risky due to the state of my lungs.
I would suggest you chat with your GP about alternative ways of dealing with your endo such as Bio Identical Progesterone Cream, Agnus Castus (Chaste-berry), Mistletoe, and Milk Thistle. These all regulate your progesterone levels to varying degrees.
These have worked for me (I rotate the use of each in 6-9 month cycles) but what works for one woman may not for another. These approaches do not have an immediate effect, so you need to be patient. Two to three menstrual cycles is the norm for any difference to be noticed regarding hot flushes etc. Acupuncture is good for pain management and I think the NHS pay for this in some cases.
Sending you a big hug and I hope things look up for you.