Yesterday was the day that had to come. I had to have Iggy put down. The fluids helped for a long time, but eventually his health declined to the point where I felt it was kinder to him to let him go, rather than prolong his agony. I was a blubbering fool all day yesterday, but today I am feeling better. It helps to know that I did the right thing for him, even though it was so hard for me.
It was $150 to have this done at my vet's office. She couldn't have been more supportive or more caring toward Iggy. I know he felt no fear. It was just another vet visit for him, and now he has peacefully gone to a place where there is no more pain.
I will miss him so much, though.