Because it's like getting a root canal, but for your kidneys
Imagine sticking a straw in your arm, and then just sitting there, waiting for the sweet, sweet taste of boredom to wash over you. That's Bore Dialysis in a nutshell.
But wait, it's not so bad! (Maybe)
Disclaimer: Bore Dialysis may or may not be the worst. Results not guaranteed. Consult your doctor, or a doctor's lawyer, or a doctor's lawyer's lawyer.