Another doozy. Certain things about evolution are proven fact (for instance, that certain kinds of birds develop longer beaks over time when placed in a different environment, to help them find prey).

Beyond that, as you say, it doesn't make a difference to faith if the Earth is literally six thousand years old or if billions of years of evolution were guided by God. The bottom line is the human race is flawed and fallen and desperately needs to be restored to relationship with God.