Are there any bugs, birds, or mammals that fly by having wings that whirl around in a circle? I didn't think so. why would anyone in their right mind get into a helicopter?
When your wings are leading, lagging, flapping, precessing and moving faster than your fuselage there's something unnatural going on. It's those 40,000 parts flying and vibrating in close formation. What's not to love?
Ray's right. Each space shuttle has 2.5 million parts - That's 2.5 million things that can go wrong with each flight. All things considered, that's a damned good safety record.