We tend to think of medical conditions as maladies. Actually, they can turn out to be things which change our lives in positive ways. Let me give two examples.
I developed diabetes almost 40 years ago. Yes it forced me to give up things I loved to eat, but it also forced me to change my lifestyle. On the doctor's directions I lost over 60 pounds within six months, and began exercising. In the last 20 years, I have managed my diet even better and greatly increased my exercise regimen. As a consequence, my overall strength and heart strength is better than it was over 20 years ago, and my weight is the same as it was when I was in top shape and playing football in high school.
Also, due to another condition, it is unlikely that I will develop any major cancer. I have had a rash which had remained undiagnosed for many years, but got worse in the last decade. It turned out to be mucosa fungoudes, a rare form of non-Hodgkins lymphoma. It has caused my body to produce excessive amounts of T-cells and they began attacking my skin. Treatment with light therapy and a cream chemotherapy has it under control now, and I will probably die of something other than cancer.
People who have Cystic Fibrosis are likely immune to cholera. At one time that may have helped them survive, however now it has no useful purpose. There are a few other conditions that are like that, necessary from an evolutionary standpoint, but no longer useful or needed, and indeed harmful. I have a 30 year old nephew with CF. It is good that you have managed your diabetes so well. I have been pre-diabetic for years. When I stopped working 6 months ago I also stopped eating sugar and started exercising. I am no longer pre-diabetic, and 30ish pounds and a full size smaller. Now I am back to work and having trouble fitting exercise in. But I will continue to abstain from sugar and eat well, so the weight will come off, just slower.
Good for you. I urge you to make sure that you find a way to fit the exercise in, as the result will serve you extremely well. No matter what (unless I am ill or have an injury) I go to the gym and work out with heavy weights three days a week. and the weight training has doubled my heart strength.