It's such a tough time and there are so many emotions colliding with each other.
Remember, there are options available but it is important to make the right choice, not for him, not for you, but for both of you.
Take some time to try and remove yourself from the situation (easier said than done!) and weigh up pro's and con's of each option and try and look at them objectively and then you can decide whether caring for him yourself, home care, live-in care or a care home is the best option for you.
Sometimes, the hardest decision is the best decision but only you can decide that.