Nosing (instead of reversing) into a parking spot. You always pick the conditions of your arrival, but not always your departure. Also, reversing into traffic is ridiculous and illegal in some places. Parking nose-first is dangerous and lazy.
EDIT: Love how you're all justifying your bad driving habits. Camera? Still can't scan for incoming traffic. Bad weather only on occasion? It's more than bad weather that can make reversing out of a door dangerous.