You're entirely ignoring the cost vs benefit view that the original comment brings up:
> Why are small planes necessary? Am I wrong to believe what it seems like, that the overwhelmingly popular purpose is entertainment?
There's much much more positive benefit to the society from allowing young people to drive. It allows them to exercise their independence, socialize, escape bad (home or other) environments, explore the society they're about to enter. I'm not one to say passion (for flying) or entertainment are not good reasons to do something, but they stand much weaker as benefits when compared to the benefits of allowing young drivers.
> Why are small planes necessary? Am I wrong to believe what it seems like, that the overwhelmingly popular purpose is entertainment?
There's much much more positive benefit to the society from allowing young people to drive. It allows them to exercise their independence, socialize, escape bad (home or other) environments, explore the society they're about to enter. I'm not one to say passion (for flying) or entertainment are not good reasons to do something, but they stand much weaker as benefits when compared to the benefits of allowing young drivers.