Without me, you will fall

I may be young
I may be different
I may be loved
I may be hated
But I am not stupid
You can think
That I don't know
You can think
That you are safe
But you don't realize
That without me
You are nothing
You will fall
Like a king
Without his castle
Like a church
With no god
So you should know
Not to underestimate me
Not to use me
Cause I will bring you down[/i]