Last night I perused RedHandedJill's post on things we didn't learn as children/adolescents and couldn't think of anything major or unique that hadn't already been mentioned. Cooking, driving, socializing. All delayed, all seeming pretty common.
Just now, I remembered! I, a 24-year-old lifelong asthmatic, definetely not a cute ginger kid, still use an aerochamber when I need to take an inhaler. I'm just not at all coordinated enough to take a puff and inhale at the right moment and not have it all land on my tongue.
My only comfort is that Courtney Barnett has the same problem and she's cooler than me.