Yesterday I rode on a Segway for the first time. I had high expectations and it lived up to all of them. A beautiful bit of engineering.
The main reason I don’t have one (despite it being an expensive toy at present) is that I would feel guilty about not exercising. It’s faster than walking and more convenient than but not as fast as cycling, but since it wouldn’t give me any exercise it’s not a compelling replacement for either of those. I couldn’t really justify it simply on the basis of being more fun.
For me to buy one I’d need to find a convincing reason to use it instead of a car. I don’t have that yet. But I’ll keep looking!