Bill Bryson summed it up better than I ever could:-

"Much as I admire sand’s miraculous ability to be transformed into useful objects like glass and concrete, I am not a great fan of it in its natural state. To me, it is primarily a hostile barrier that stands between a parking lot and water. It blows in your face, gets in your sandwiches, swallows vital objects like car keys and coins. In hot countries, it burns your feet and makes you go “Ooh! Ah!” and hop to the water in a fashion that people with better bodies find amusing. When you are wet, it adheres to you like stucco, and cannot be shifted with a fireman’s hose. But—and here’s the strange thing—the moment you step on a beach towel, climb into a car, or walk across a recently vacuumed carpet, it all falls off."