If it could be proven one way or another that God is false or that what scientists believe is false, how would it change you?

I first started thinking about how I would feel if it turned out scientists were right and they could explain our existence down to the beginning of time. Then it would disprove the existence of God.
Then the scientific curious part of me wondered what if God could be proven and it proves we really know nothing of the world. I’m still pondering so I will get back to you guys on that later.
In the mean time, it made me wonder how others would react if their belief system was totally blown out of the water.

What or how would it change who you are, or why do you think it wouldn’t matter one way or the other to you?