Hey tom, I have a couple things for you. One is, it is so scary to be a parent when things go wrong! my darling young adult son had a run-in with the law a few months ago. not the same as a chronic illness, but the fear for the future nearly killed me. things are going well now (for today, anyway!) but the anxiety around fears for a kid is powerful stuff, and reasonably so. however, that doesn't mean that therapy can't be helpful and if the time comes one feels he or she can't quite cope with life, it is manditory.
my other thought is, long-term this disease can bring almost anything. I have met several people who get their health under control and after a rough year or two are fine. some on meds, some not, but the future can really be ok. I was one of the lucky ones who found relief from surgery and dietary changes and am doing well enough. and yes, those who feel fine aren't here. I am rarely here, myself. but for a couple years, HW saved my life and I come here when I want to share some good news.
take care. yp