Dear Senior Citizens, have you found out this to be true based on your life long experiences ?

More than seventy years of experience has taught me never to be as sure of anything as you appear to be. Very little is "always" and very little is "definitely" so one would never be to quick to say "the fact is" unless one can produce incontrovertible proof to back up the ertion. Learn to question your beliefs and you'll be the stronger for it.