Type 2 does not really need insulin unless it's in an advanced stage. Most people manage it well with proper diet, regular exercise, and oral medicine. Unfortunately in many cases it goes undetected, unless people have annual exams to catch it early. Type 1 is much worse, but it seems there may be a medicine on the horizon for type 1. Not so for type 2, so discipline is really important. I had an uncle with diabetes, and he lived to be 86 or 87. He was extremely disciplined in his life style; he even turned down promotions in his career because they would have disrupted his regular schedule.