Quote:
Originally Posted by Devils'Advocate
If we don't lose things due to disuse then where the hell is my tail?
I'm vegetarian, not due to believing in "animal rights"... I don't much believe in "human rights" either. I'm close to being a Utilitarian though that has its own inherent flaws. I do believe that we, as humans and can understand that we are causing suffering, should minimize the suffering that we cause.. to animals, to other humans, to everyone.
Just as much as CaptainCrunch believes we humans are predatory evil creatures built for waging war, I believe I am not. Or at least I strive not to be. If others choose to waive their ethics on the grounds of "bah, humans are evil anyway", well, so be it.
FYI OBCT, I still have "pepperoni" pizza once a week using Yves Cuisine's pepperoni. I've got nothin' for chicken fajitas yet.... we vegetarians should get someone on that. 
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Though there is no definitive answer (and there rarely is when dealing with theories) as to where human's tails went, evolutionists have hypothesized that the tail became a hinderance for land-dwelling primates (as opposed to tree-dwelling). There are theories that the tail made travel (especially bipedal -two legged) was hampered by a tail. Another theory is that there was an increased demand (while slight) to the circulatory and nutritional systems when having a tail. (I think that explanation is a little weak, but it is a hypothesis).
Another theory is that tails were actually the genetic mutation, and that earliest forms of primates had no tails.