The Peloran have never told us why they look like us. They have only answered with more questions. Would we believe them if they told us that it was random chance, evolution following the same pathways? Or that they were the descendents of humans kidnapped by aliens? Or that we were one of their lost colony worlds? Or they created us? Or maybe someone else created all of us in His image? There are so many questions they give us. We have only ever received one answer from them. That it is not their place to tell us our place in the universe. It is up to us to find it.