The Big Picture - Turning Points in the Early Times of the World

I am still fascinated that we have been able to find early proof of humanlike creatures and how things may have been. I read over the definition of Paleolithic in the text book - "Paleolithic also referenced as "old stone age" refers more generally to a food, collecting or gathering and hunting way of life before agriculture allowed people to grow food or raise animals deliberately." Really?!? This has to be another WOW factor for my little brain. The thought of us evolving over time and someone brilliant or by accident decided to grow some food and raise some animals deliberately. It reminds me of the cartoons of some sort on how man discovered fire or the wheel. I love how we have evolved but what is in store for us as we move forward into the modern era. Google has been  coming up with things for our consciousness to live forever. Is that something we should strive or should we just leave alone what the cosmos have provided us?