This is pretty upsetting, having family with type one (genetic, body does not create insulin at all) diabetes. The fact is more than 1 in 4 insulin users will never not need insulin no matter how much weight they lose, and even among t2 diabetics, many will never not have t2 diabetes because it has a huge genetic component as well.
Without insurance their insulin would cost $950 a month.
I don't know how I would figure this out, but considering most t2 diabetics don't use insulin (only 28% is the number I found) and every t1 diabetic does, combined with the fact that t1 diabetics generally use much more insulin, I'm willing to bet most insulin ends up going to t1 diabetics.
Even that doesn't fucking matter at the end of the day. Your doctor writes you a prescription for insulin, you need insulin.