At the age of 18 you are required to be available to serve and perhaps die to protect our country. You’re taught how to shoot a gun and participate in war, yet, in California, you can’t purchase cigarettes or drink alcohol until the age of 21.
On the other end of the spectrum at age 70 you are no longer considered eligible to be a juror in our judicial system. However, eight of our U.S. presidents have been nearly that age or older while governing the most powerful nation in the world.
None of this makes sense.