THERE IS A REASON FOR EVERY TRADITION
No law or tradition got started for a useless reason. The reason we use age 65 as retirement age goes back to Kaiser Wilhelm of Germany. The young ruler wanted to fire the men who had served under his father, but was forbidden by law. So he created a new law stating that government workers had to resign at the age of the youngest age of his father's former aides... age 65! The tradition is still carried on today.
Before you try to change rules or traditions, examine their original purposes. Are they relevant now? Do they fulfill the purpose for which they were intended? Is there a practical sense to keep them in place?