The great Warren Buffett said, “If you don't find a way to make money while you sleep, you will work until you die.”
He’s mostly right isn’t it. Try to create a passive income if possible.
This is definitely a reality for all of us, but I don't think people come to realize this because they still give more time and value to their respective jobs instead of dedicating most of their time in finding an investment that will give them passive income. However, no regrets that appear in the beginning, it's always in the end. People will realize eventually when they're no longer capable anymore to work and go to their job sites.