Plus the sun is part of the first generation of stars formed with a protoplanetary disk metal-heavy enough for terrestrial worlds with sufficient heavy elements to support life to form. And if you take the "any interstellar alien life would eventually spread to all stars in the galaxy (and beyond)" as a given this puts a huge selection bias in place because any intelligent life to form must be among the firstborn because there will not be any latterborn because the firstborns will put a dyson sphere around their star before they can emerge.