I think I know now

As the children get older
      wider view
      there are more things to see
The future will be widened
      there are more things to do
      Joy and sadness also
Meet often
              .......
As parent get older
    field of view is narrowed
    less than can see
The future becoming limited
      there are few things to do
      Joy and sadness
Meet often not
                    .......
One day, parent said
        "If you have time, will you come once?"
        I just passed by
                              .......
parent and children
          they can share past and present,
          given future cannot do that
I feel I have this today.