Why wouldn't the fall change our bodies. Didn't God say if you eat of it you will surely die? There are hundreds of other passages both in the new and old testament that say we are disease ridden evil individuals.
So the "fall" rerouted the recurrent laryngeal nerve. Makes sense!
Anyway, you asked why some people might think humans are perfect, and wnoise answered why some people who read the bible might reasonably make that assumption. What exactly is your continued issue here?
None, like I said I was just curious why people thought that.
Now I get it, people are willingly lazy and stupid.
I guess I think too much of people, I'd expect them to get past page 1 in the bible.
Believe it or not, it is possible for people to read the same text as you, have a differing interpretation, and not be "willingly lazy and stupid".
Well, I mean they are looking for fact in a thousands year old collection of fairy tales by assorted authors, but they're not particularly any more willingly lazy or stupid...
Genesis 1:27: So God created man in his own image, in the image of God he created him; male and female he created them.
That certainly sounds like we should be perfect in body. Unless you want to argue that the Fall rerouted the vagus nerve.