We are not talking about throwing away everything to insure ourselves against future catastrophe, we're putting a small portion towards a bit of futureproofing. Seems smart to me.
Besides, it looks like our own behavior is going to do it for us, so might as well "love the bomb".
I hope it could be us that will do those amazing things you mentioned.
Besides that, I think that personification of "Mother Universe" is just a xenophobic form of human fear of the "otherness" surrounding us. There is no monolithic Mother Universe, more probably, there is a mesh of living creatures and natural phenomena we are a part of.
We are a part of Mother Universe.
There are things we need to prepare for and there are advantages to starting now. Every advance we make is a foundation for something else. I think there are things we take for granted today that only exist because of some urge to explore and learn thousands of years ago.
"The best time to plant a tree was 20 years ago. The second best time is now."
To be selfish, I'm keen to see what we can find out about our world (including beyond Earth obviously) in my lifetime. Something like the comet landing is a step along a far bigger path to getting all our eggs out of a single basket situation.