Sometimes people just want to be nice, so they might say things that seem fine in their head but it doesn’t come out as they thought. If you have a chronic illness, it means you will have to live with that disease for the rest of your life. Sure, you will have ups and downs and some moments will be better than others, and at some point you will feel better, but the disease will always be with you.
Even though they might want to show you support, saying that things will get better is not fair. Living with a chronic illness is like being on a roller coaster all the time; you can’t predict what’s going to happen next.