Early childhood milestones **** by,
   first tooth,
       first words,
           first steps,
                first days at school.

Teenage milestones are anticipated,
    first date,
       first dance,
            first kiss.

Adult milestones arrive,
       first job,
           twenty-first,
                 engagement,
                     marriage,                                                                              
                       offspring.

Middle age milestones are measured
             by milestones of offspring.

Through latter years one yearns for
             milestones that have been.

At the end of one's years
        one waits for the inevitable,
              ultimate, milestone of
                    death and rebirth