In India, the eldest has the most responsibility and the crown goes to him. The crown could go to a person with the most talent. But how could 'most talent' be determined? So Indian society settled on age.
When I was a kid, we called every teacher, every parent - anyone over the age of 20, it seemed - 'Mr. or Mrs. so-and-so.'
I'm older. There's some sort of seniority. As a matter of fact, the seniority ebbs as you get older.
The musicians I respected were much older than me. I expected them to cut my head, and they did.
The nice thing with the Arabs is that with age comes respect.
In Africa... age is not important over there. They don't care.
Germany's hierarchical reverence for seniority may have something to do with the fact that everything here happens relatively late. Germans start school at six, graduate in their late 20s, and get their first proper jobs in their 30s. Adolescence can go on a long time. It is rare for anyone to achieve responsibility before their 50s.
I do not think, sir, you have any right to command me, merely because you are older than I, or because you have seen more of the world than I have; your claim to superiority depends on the use you have made of your time and experience.