I think 14-22 or so is the "sweet spot" in age where the average person has both the intellectual ability and the manual dexterity to solve it quickly.
Also, kids have more time, and are more likely to have friends with the same interests.
I think the main reason is that kids have a lot of free time and nothing to do with it. Also, a lot of them probably do it to impress their freinds. I also think that kids solving the cube at school and older siblings being able to solve the cube have a lot to do with it. Plus kids have a lot more persistence and dedication than adults. For example, most adults who cube have been doing it for years. There aren't many who just started, they usually have been cubing for a long time. The "Sweet Spot" is probably 14-22 because that is the time when most people have the most time, dedication, skill, and intelligence.
*high-five* Vsauce FTW
idk, I'm almost 13, and I was always interested into puzzles.
I think that we are getting into a time in humanity when intelligence will be more prioritized than masculinity or athleticism, what with the growing digital age and all.
This thing all things devours:
Birds, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stones to meal;
Slays king, ruins town,
And beats high mountain down.
This thing all things devours:
Birds, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stones to meal;
Slays king, ruins town,
And beats high mountain down.
This thing all things devours:
Birds, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stones to meal;
Slays king, ruins town,
And beats high mountain down.