1. He doesn't have to be online for a guild war. That's the reason I never joined guilds. They forget it's a game and have these "requirements" like it was something solid or real.
2. He needs to get treated for his illness, not play games and ignore it.
3. He needs to get up and help out. If the room needs cleaned, then instead of expecting someone to clean it he needs to get up do it himself.
4. Finally a marriage is about two people, not just one and he needs to invest in you. If he wants your marriage to work, then he needs to make it work, not just expect it.

He can play some without having to spend 6 hours a day on the computer. An hour or two is plenty. Then he can invest in your relationship.