Another thing that I take for granted are posable thumbs, I mean, without them, I wouldn't be able to control a joystick, write, hold a can, choke someone, grip a guitar, use a toothbrush, turn a doorknob, the list just goes on and on. It's all thanks to evolution that we have moved up from primitive paws to posable thumbs! We wouldn't have gotten nearly half as far as we have without posable thumbs. To think of the numerous devices that we use in everyday life which we use our thumbs for without even thinking about it, it would be just crazy n' crazy-like!
There are countless things that each of us take for granted in life, but nobody has the time to actually sit down and point out every single one. Even someone having the ability to casually stroll down the street without having to worry about a piano falling on his head is just one of the extreme possibilities of what someone could be taking for granted. It's best just not to think about it, it induces headaches...