Why Life?

Why Life?

This isn't "Why, Life?" or "Why? Life?"
It is a question I pose to you, my reader, on why life exists.
Does it serve a purpose? If so, what purpose? Whose purpose?

Is only human Life important? Or is animal and plant Life also important?
Perhaps only animal or only plant Life is important.
If only one of these Lives, what purpose do the other serve?

Can you give an answer?