I've heard the "God created the Earth to look old argument" as well. Right I agree we can only say that is was created. Even the when is up for debate. Which is why I said I believe. This is my opinion.
When people say they want to know truth but then I state that the Bible makes claims about it being the Word of God and the ultimate truth in which God revealed himself then it gets thrown out without testing it. At least this is how it is when I talk about this with other people.
I agree with you that the human centric nature can get in the way. At the same time if that is the case then we should look for someone or something much more intelligent than us to convey Truth. If we can't ever know truth then what's the point of any of this. Then it's all relative.
Bright Blessings all the same!