I saw some research that concluded the key advantage was being able to carry food long distances. Most animals have to eat food where they find it, but humans can easily kill an animal and haul it back home to safety. It lets you avoid having your kill stolen by larger predators and lets you bring home the bacon to your family.
Basically, being bipedal makes cave-dwelling and the hunter/gatherer society possible.

"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.







