Well, as I've always mentioned, I'm not a doctor (or anything close to have any professional medical background), but I do read stuff on this subject (a lot!), and sharing from my personal experiences.
To me, diabetes is a lifestyle illness. Meaning, whatever your lifestyle is right now, it's sucks, and it's killing you (with diabetes). And I know most of you diabetes sufferer out there, this is not new, you know this. The thing is, instead of procrastinate, why can't you just change the poor lifestyle into a better one?? Lead a healthy lifestyle for say just a 3-months period, and then decide. The proof is in the pudding !!
Once you've fixed your diabetic condition (of poor insulin resistance), and you're already lead a active lifestyle, it's ok to sometimes indulge! you've to earn it.
No one else can do this for you, it's all up to you. You're 100% responsible (and stop blaming others/environment/genes.... pls).
See my earlier post on these subjects