I'm not sure I agree with your assertion that faith is inherently irrational, but I will say this:
All people everywhere live by faith.
This is because no one can know the future. You get in your car and drive to work. You are going by faith that you won't get killed in a car crash. Why do I know this? Because if you knew you would be killed, you wouldn't get in the car. You don't know. But you get in your car anyways, hoping by faith (probably subconsciously) you won't get killed.
By faith, I look at the evidence and believe God exists. By faith, someone else looks at the evidence (or lack thereof) and concludes He doesn't.
I can't know for sure if I'm correct. The other person is in the same position.
When we die, we'll know (technically, if the atheist is correct, we won't know anything at all). Good luck!
All people everywhere live by faith.
This is because no one can know the future. You get in your car and drive to work. You are going by faith that you won't get killed in a car crash. Why do I know this? Because if you knew you would be killed, you wouldn't get in the car. You don't know. But you get in your car anyways, hoping by faith (probably subconsciously) you won't get killed.
By faith, I look at the evidence and believe God exists. By faith, someone else looks at the evidence (or lack thereof) and concludes He doesn't.
I can't know for sure if I'm correct. The other person is in the same position.
When we die, we'll know (technically, if the atheist is correct, we won't know anything at all). Good luck!