It's retro and minimalist. I have one I use for occasional bombing around, and it's a different kind of fun. You can spend more time enjoying the ride without the distraction of shifting gears. As long as you stay away from huge hills, it's fine.
Mine is a 60cm 1980 Schwinn World Traveler frame (used to be a 3-speed) with a leather saddle, comfort bars, and no fenders.
"It's retro and minimalist."