Nature, like you, prefers cycles. It's just Nature's cycles involve weather patterns and yours involve chains and spokes. But you two deserve each other, really. Gear up and hit the autumn outdoors! Lovely foliage, you know.
The car pollutes. The unicycle looks dumb. The tricycle is for babies. But the bike? Well, now. THAT'S sporting. Good exercise, good on the environment, and you can carry it up the stairs if you don't want to park in a bad neighborhood. Just don't take it on the freeway and everyone will be happy.