I'm not sure that I really understood much at the age of 8, but when you're "normal" you just live and don't think about it, the advantages that you had begin to appreciate only after you lose them. I don't remember paying any attention to my health before diabetes. I definitely had friends (but now I have friends too), I can't say I was very fond of sweets, but I really liked bread. I was more active and sociable than I am now, my parents weren't afraid to leave me with my relatives for a long time.
So far, I haven't had a headache when the weather changes (it started when I was 24) I didn't pay any attention to how good my head was without pain, I only started thinking about it when the pain came

so I don't think that "normal" people notice that they have any advantages.
It seems to me that psychologically, the earlier a person develops diabetes, the easier it is to get used to the fact that you have it, because you don't have to radically change your life because of the disease.