Hubby when he is feeling down will say will there's always someone worse than me. And that's realy true. Many people who have a terminal disease and are dying would gladly change places with a dialysis patient.
One of the most persistent and profoundly mistaken illusions among pre-dialysis patients, which I note also in Sunny's comments, is the idea that the patient will somehow feel better as dialysis continues! Since dialysis replicates only 10 to 14% of normal renal function, the longer you stay on dialysis, the more you deteriorate. That is why life expectancy among dialysis patients is so extremely short, amounting only to 8 years, for example, for a diabetic in his forties. So you should not expect to feel better as dialysis continues, but much, much worse. During my first year on dialysis I felt almost normal, except for persistent itching, but as the years went by, the exhaustion, nausea, vomiting, sleepless, and inability to conentrate became steadily worse, until by the end of the eighth year I had to stop work on an academic book I was finsihing, simply because I could no longer compose coherent paragraphs.