How can I help my husband?

We have a 1.5 year old who has been a bad sleeper all his little life. We have no village. I've been doing probably 80% of the nights alone. So to start with, we're both exhausted and have been for a long time.

I can't really describe it and I don't want to be unkind but my husband is so sad to be around.

He hates work (even though we moved across the world when he hated his last job too).

He often sees time with our toddler as transactional. If he has our toddler in the morning, I should have him in the afternoon.

He could sleep the entire day away, everyday.

He has no hobbies or interests apart from the gym. After our son goes to bed he will game online for hours until bedtime.

He has no enthusiasm, no drive, no zest for life, no bone in his body wants to do a fun or spontaneous thing. Everything feels like something he does for our sake.

He is exhausted. *I* am exhausted and I still wake up 4+ times a night while he usually gets the whole night to himself. The rage I feel when night after night he says that his sleep isn't restful...!

He has spoken to someone about depression before. He had also been living with an long term injury for which he's since received surgery to fix but his demeanor remains the same.

He is currently down with illness and I'm feeling even more resentful of having to carry everything.

Can I even help him? Sometimes I just look at him and wish he would just leave us if it meant that he would be happier somewhere else.