I agree entirely with you.

Life is a necessary precaution like the shadow for the tree.

I'm trying to grasp the significance of this line.
I don't think that by shadow you are referring to the shadow of the tree rather about when the sun is out. It's a precaution so it doesn't dehydrate? 

Or the shadow is there to tell
The tree that time is moving on?
Would you care to explain? :)

So our life is a precaution to remember us that we are alive
And that we are an awesome creation yet so harmful?

Nakedness existed before the body.
And at times the body remembers it. 

--- I agree with this part. 
But the upper is tricky.

The title drew me in... so philosophical, it felt. And it's like music to my ears.... brilliantly penned.

Great piece