Hahaha, nah man, definitely no benefit to being a diabetic, that is for damn sure!!! I guess if you could make any positive light out of it, it's the fact that you become more conscious about food choices and stay ripped up all the time. But the gains can be slower because you end up basically having 2 choices here; use more medication in order to eat more or stay leaner and gain slowly. But with more food comes more insulin, and with more insulin comes greater chances of going hypo, even if you do everything just right. There are always other factors that can come into play with insulin such as time of day, environmental (heat, cold) stress, sleep, etc etc.
I could probably give more first hand knowledge on insulin use than anyone here