After reaching a certain age, we see time differently. While we would be willing to engage in debates, arguments, and disputes with people to prove we're right when we're 27, at 72 we would rather focus on love and peace and fight only when we pick our battles.
Life is too short to waste our time on unproductive activities. Life is too short as well to engage in productive activities which cost us much time.
When we're younger, time is like silver. When we're older, time is like gold.