I think it's safe to say that even if we find treatments that give patients very long lasting remissions, remissions that seem to go on forever, we won't call it a "cure" until we understand the underlying mechanisms of UC well enough to understand exactly how the treatment works to "cure" the disease.
Life is an incurable condition. I think UC is really hard for a lot of patients to accept because it tends to strike young people who are otherwise healthy. Pretty much everyone eventually gets a chronic illness unless they die young, be it garden variety hypertension or less common diseases like UC. It's scary to have something "forever," but everyone who lives long enough ends up with a "forever" disease. This kind of thinking was comforting for me, I hope it helps you.
dx'ed UC pancolitis 5/12
past meds: asacol hd, VSL#3, apriso, rowasa, xifaxan, 6mp, cortifoam, pentasa, cimzia, canasa, butyrate, flagyl, cipro, prednisone, remicade, methotrexate, cholestyramine, cortenema
current meds: none!
step one: colectomy, end ileo 1/16/13
step two: j-pouch construction, loop ileo 5/1/13
step three: takedown 7/31/13