From the show Wicked, what is this quote supposed to mean?

Question

Like a ship blown from its mooring by a wind off the sea. Like a seed dropped by a sky bird in a distant wood.” (what is comparing too) from the song For Good

Answer 1

To me it means that man must have a purpose in life.  One must have a destination we want to reach.  Unlike a ship blown from its mooring or a seed dropped by a sky bird because they don't know where they will wind up.

Hopes this helps.