LOL! It doesn't matter what age someone starts, we are all jealous of those who start younger (and that made me hesitant to post this thread in the first place).
I see kids now as young as 7 or 8 speaking out, getting on blockers before puberty, HRT in their teens, and I am jealous as hell, not so much of them but of the way the world has changed and it is now possible for them. Of course, if I had been born a year earlier, I probably would not have survived....