Quite simply round is the secret of the universe. Everything is round at one level or another, molecules, planets, universes, etc. The circle of life is a prime example. Even our concepts of social behavior are based on round; do unto others as you would have them do unto you. Everything has a beginning and an end, but they are actually one and the same.
Once you embrace this concept then anything you endeavor can benefit by applying it.
Maybe a billion years from now astronomers will realize that space is just a giant ball of space and time combined.