If someone could "scientifically" prove creation or the existence of God, then believing in them would no longer require faith.
How would that be a problem?
Church would get real crowded.
Which church? Simply proving a God or even creation doesn't change too much, many people already beleive in at least some sort of higher power. People tend to assume that proving a God means proving their particular version of God, which it doesn't do. .
How do you know what "proving a God" entails? What are you basing that particular opinion on?
