I have a friend who is in her late 80s who is type 2. She maintains that her DN is very happy with her dietary control and claims (unsubstantiated from what I see her ) that she is careful what she eats. She has had diabetes for 17 years and like you has not experienced physical complications although has been on depression tablets for the whole of that time. In the last couple of years her meds have been upped so as well as metformin she now takes Gliclazide. Now at 87 she is unlikely to want to change her diet which is fine and it seems to work for her but I also have a sister aged 72, who is Type2, who has no feeling in her hands and feet, has problems with her eyes and has lived in a world of black depression for a number of years such that she feels her life is not worth living. Admittedly she does not have very good control which has aggravated the situation. Over the years her meds have been upped and upped so she is now insulin dependent. Whilst I know that sometimes whatever we do our bloods have a mind of their own, whilst I can, I will do everything I can to avoid my diabetes progressing so I eat a very low carb diet no more that 30gms a day. I reason if I can keep my bloods at non diabetic levels for as long as possible, then there is less likelihood that I will suffer the complications that my sister has experienced. I do not miss eating bread or potato or other high carb foods and I was never a sugar lover. Yes its a personal choice but low carb eating has also helped me to lose weight without trying which I found difficult to achieve prior to my lifestyle change. I also feel so much better in my general health and fitness. I think if I went on 120 gms of carbs I would see my bloods lift up and I may also start putting on weight I don't want to take that chance. My sister is 5'2 and weighs 15stone and hates herself for it.
In your case, it's quite often quoted on this website, "everyone is different" so if you have found something that works and you are happy, then embrace it.