We think we know everything. We don't even know 1% of what's coming out. When it does..
You will need to cry, you will need to scream, you will need to lash out, scream at everything and everyone. Because you need to feel all of this, this pain needs to be stored in every cell of your body.
Why?
So that you will never forget what you lived in this dimension; so that your soul will never forget what it was part of. Yes, every soul present on this planet was part of it all, none can deny it. So let this register in every cell of your body, as a deep incurable pain, but it will not harm you; it will be just a memory, a painful memory. I might even say extremely painful on the physical level when remembered; but it will be that memory that will prevent you, in the future, from repeating it all over again.