When I was younger and fitter, I used to commute to work (about 16 miles each way). I was riding home one day on my heavy steel bike and I passed a dude on a mountain bike at the base of a moderate hill and I thought - I better bury this guy! He was on a mountain bike, had a backpack on, had his DRY CLEANING dangling from the top loop of his back pack... so I freaking hit the pedals hard.
Got to the top, he rode right by and said "Thanks for the draft"
Later, I used to do a weekly ride with a bunch of guys, and some new guy showed up on a mountain bike and *he* kicked my butt every time we rode too. He could have beaten me on a tricycle. There are just people like that and that's OK.