In the end all society's have a baby-elder process with many stages. We let 15 year old's risk their and others lives driving multi thousand pound vehicles at 70+MPH. We keep prescription medication behind many additional hoops even for well educated 60 year old's.
IMO, the real difference is how much education people need. A 15 year old can dig a ditch just fine, but cancer research takes quite a bit more. In the end society simply values 15 year old's time less.
In the end all society's have a baby-elder process with many stages. We let 15 year old's risk their and others lives driving multi thousand pound vehicles at 70+MPH. We keep prescription medication behind many additional hoops even for well educated 60 year old's.
IMO, the real difference is how much education people need. A 15 year old can dig a ditch just fine, but cancer research takes quite a bit more. In the end society simply values 15 year old's time less.