The Hubble Deep Field blew my mind 23 years ago. This is no less impressive. Mankind now sees black holes 12.5 Billion years in the past. And we still have the Webb telescope to look forward to. 

So my question is, can cosmologists really maintain their sanity? How can anyone contemplate facts like these, and not go stark raving mad? Where, exactly, does our piss ant planet fit in a universe as immense and mysterious as this?