Another member of Team Unmanageable Hair here.
It actually started somewhat inauspiciously ...
... until age 2, I didn't have any hair at all.
When it did start to grow, though, it soon became clear that it was going to be a challenge to keep in check -- it's both frizzy and curly (and the curls and general frizziness multiply with the level of humidity they're exposed to). When I was little, my mom tried the "keep it short" approach ...
... but that ultimately didn't really help, either -- the only thing it achieved was to make me profoundly hate going to the hairdresser's (to this day, in fact). So ever since my childhood, the struggle has been real!