Except we did. You just ignored everything that doesn’t fit the pinhole of your worldview.
Science does not have alternatives. Science describes the natural order of the world in quantifiable, repeatable ways.
Religion, tradition, consensus and all your other bullshit all rely on human information, which are not reliable sources of truth. The only way to prove something is to observe, document and then have others verify, which is also known as the scientific process.
Edit: As soon as someone gives him an argument he stops relying. What do you know