Question: “Why haven’t we found the remains of a bigfoot that died of natural causes?”
Answer: “No serious work has ever been done to look for remains of surviving wood apes in areas where they are rumored to reside. No one should expect remains of such an elusive species to be found, collected and identified without some effort.”
Hmph. Sounds like an excuse to me.
Bet you didn’t know that the Bigfoot Field Researchers Organization (1) exists and (2) has a website.