Birthday

One day in year,
One special day.
When you are young,
You can't wait to have one.
But when getting older,
You start to wish nobody remembered that.
Most strange is that when you get old enough,
You start to celebrate it again,
Slowly at first,
First once every decade,
Then once every five years.
Finally you are ready to celebrate every year.
Then comes time that you celebrate every morning you wake up.