After Noah's Flood, God said he would never cause it again. I do not worry if the end of the earth is coming.
I will go to heaven..
anyway, In preparation for the end of the earth, I think your idea of preserving human knowledge and civilization is correct.
It is always good to properly preserve the harvest. The wealth of humanity is far more valuable than crops of the field, or tools to work with. It is our society and knowledge, our good company and ability to work well together that is most valuable of all.
Thanks!