To make yourself look that tiny bit older, right? Because you know that if you extend your height by just two or three inches, everyone will overlook your blemish-free face and see you as you really are: a twenty-something individual who is so goddam sick of being mistaken for someone who just hit puberty. Your wardrobe is full of stilettos and boots with heels. And if you wear sneakers or flats to a theme park, you often can't get on to the big rollercoasters because you're not tall enough or old enough looking to reach the height limit for riders.