1-Children saying as you pass , "Mom, Dad, look at that! Can I get one?"
2-Not feeling numbness in the "nether" regions after a long ride.
3-Since few people are familiar with them, you can add any accessory and it looks fine ( fenders, multiple blinkies, kickstand, fairing, etc.)
4-The faster you go, the more stable it is (to a point, anyway)
5-My EasyRacer Sport Ltd looks like the Schwinn Stingray I had when I was ten years old (if the Stingray lost its 2" slick, banana seat, sissy bar and was stretched out just a bit)