But why... does it matter if who god is to us is different?

Q: What makes you so sure your god's the right god? If there were any god at all? I'm not atheist; I believe this planet is my god. And it doesn't matter, I have nothing to lose. Who cares?

A: "The creation of the world shows God's invisible qualities-his eternal power and divine nature-they have been clearly seen, being understood from what has been made, so that men are without excuse."

God, my God, is revealed in every minuscule detail of life - nature, people, science, relationships, etc. He's confirmed who He is (and His nature) in His word - which is confirmed by history, archaeology, prophecy, biology, etc. And around and around we go. He has given us every opportunity to know exactly who He is and who He is not, so that "men are without excuse." All other "gods" have proven themselves false, while God, my God, cannot be defeated.

You said you have nothing to lose, but there is plenty at stake.

• If I'm wrong, and there is nothing after this life, and no God, I lose nothing.
• If you're right, you gain nothing.
• If you're wrong, and what I've shared with you is true, you will have lost everything, eternally. You will have permanently separated yourself from the source of every pure, good, comforting, redeeming thing in this world, choosing instead a perpetual death.

You seem like you're convinced that God, my God, is not God. Therefore, no matter what I might show you, you will insist on interpreting it in a manner that aligns with your presupposition that god is whatever you decide him or it to be.

If I had a thousand eye-witnesses saying they saw Him, you'd say it was a mass hysteria. Even if I have incontrovertible evidence, your presupposition would force you to interpret the facts consistently with your presupposition and you would not be able to see the proof.

Just remember: Truth does not fear investigation.