Would Make A Lot Of People Less Cautious

"Unable to regenerate body parts."

"You lose an arm or a leg, you can't grow a new one."

"We can grow hair and nails forever, but not body parts."- drygnfyre

And Maybe The Whole Childbirth Process While We're At It...

"The size of the average baby head vs the size of the average vagina."- Ruggiard

"The Obstetric Dilemma."

"Basically, the human body isn't built for easy birth."- strykazoid

It Isn't Terribly Practical If You Think About It...

"IMO the whole 'we put food into the only air hole we have and can choke and die if we aren’t careful' thing is a pretty big miss."- el_rico_pavo_real

"Throat has a built in flaw - we breath n swallow food through the same area."- coolguy1793B

A More Direct Route Would Be Helpful

"I like the example of the recurrent laryngeal nerve."

"It runs from the brain to the larynx."

"However, to get there it goes from the brain, down the neck, into the chest, around the aorta and then back up the chest, up the neck and then connects to the larynx."

"That's a massive detour."

"It also means a blow to the chest can damage your ability to talk."- The_Thunder_Child

Never Underestimate The Damage Teeth Can Do

"The fact that I sometimes accidentally eat the inside of my mouth."- -Grey_Area-·

He Does Have A Point

"'Nostalgia is the greatest human weakness. Second only to the neck'... -Dwight Schrute

In Plain Sight...

"In our eyes, the blood vessels supplying our photoreceptors are in front of them and therefore in the way of the incoming light."

"Probably not the biggest and there are some good justifications for it being set up this way."

"But it still must be such a pain for the brain constantly having to edit these out when forming our visual experience."- oliwoggle

Maybe Just Every Illness And Ailment?

"A stroke."

"My aunt had one when she was 31 and the healthiest person in the world."

"Ran an aerobics class at the Y, just perfect perfect health."

"Went to Pizza Hut with her the night before, next day, massive stroke, almost died, critical surgery, twenty years later she still has trouble speaking."

"It sucks."

"There is no reason that should’ve happened."

"Perfectly healthy person damaged for the rest of her life."

"She’s still amazing and lovely and my favorite person but damn is that annoying."- Jibber_Fight

"You can kinda just die at any moment from a brain aneurysm, even if you're perfectly healthy."- mcsteve87

All Our Bones Could Be Stronger...

"For upright walking creatures, why is our head so (relatively) delicate?"

"Trip a single time and you're blinded, have brain damage, bit off your tongue, or lost teeth."- kmn493

They Arguably Also Weren't Built For Stairs...

"Our knees for sure."

"They just weren't built to last past 40 years."- TopShelfCrazy

A Couple More On/Off Switches Would Be Helpful As Well...

"That we cannot delete or sort unwanted/not needed info and memories from our brains."- PickAName616

As the saying goes, "nobody's perfect."

Or rather, "no BODY is perfect."

Otherwise, we'd all stop complaining about aching limbs or worrying about choking or other injuries.