I refuse to check luggage when traveling during the busiest times of the year. Why? I fear being stranded without clean underwear or toothpaste in case of inclement weather, botched layovers, or whatever last-minute delays might strike. Last year, due to circumstances which I am still not sure, I was stuck at a hotel outside the Mall of America on Christmas Eve. It was as wonderful as you can imagine.
At least I was a happily stranded camper come time when I needed a good teeth-brushing. Thanks to my carry-on luggage, complete with Ziploc baggie filled with grooming goods, it was easy to stay fresh. When you have to pack liquids, what's your carry-on number?
Source: Flickr User javajoba