I am 37. It is by the grace of God that my parents were born in 1936 and 1940 as my upbringing in a suburban hole was QUITE different than most others where I lived. You see, my parents ACTUALLY remember an America where walking and biking were the NORMAL ways to get around, and actually encouraged me to do so with very little supervision and a lot of trust, the right way in my opinion. So instead of give in to the car where I live, I have started commuting by bike in a suburb of Nashville (other than Whole Foods next door, I never see a commuter bike around here, ever, though I do see recreational bikers since it's a wealthy area).
My biggest irritation is the "wear a helmet" comment. "Are you wearing a helmet now?" No, and I don't plan to. "Did you buy a helmet yet?" Yes, and it sits in my garage, I don't like it. Then I get a big lecture about so and so knew a friend of a friend who got injured on a bike. It's ALWAYS A SUPER SILLY HIGH SPEED BIKE RACE. ALWAYS. I tell them I never bike at these speeds and it's silly to bike in a group like that. These car drivers, almost all of them non bikers, always respond, "you should wear a helmet."
I will make a deal with you overweight people, when you wear a helmet driving your car to work, I will wear a helmet when driving my bike to work, lol.