The Big 7-0

If my dad had lived, he would be the big 7-0.
On this day, Dad was born seventy years ago.
Seven decades is how long he would've been alive.
But leukemia killed him, Dad did not survive.
He lost his life in 2013 on the 13th of July.
Dad would be the big 7-0 if he hadn't died.

[Dedicated to Charles F. Johnson (1947-2013) who died on July 13, 2013.]