"Five is an odd one, both numerically, but because we have five fingers, five toes, five senses, a star fish has 5 legs, and flowers usually have 5 petals, but true 5 fold symmetry does not occur regularly in nature.
Our number system is based on units of ten because this is what we could count to using our fingers, but theoretically 5 would be a better base to leave the other hand free, however, the only language to use 5 as a counting system is Saraveca, a language of South America."
I just love the number 5. It makes me happy every time I see it or even when I'm saying it.