It's been maybe 3 decades since I owned a bicycle and recently decided it was foolish not having one around. They are well crafted machines that can be used for exercise, fun & even to get around in if using the car doesn't become an option (earthquake making main roads impassable to cars, gas rationing, etc).
Now also consider something like a GEBE kit and that improves speed, opens up the range of bike travel and major help climbing nasty hills. I think of it as still fundamentally a bicycle, but, with 12 pounds of assistance to keep your pedaling along.
Plus, there's versatility. If the engine fails or run out of gas, you can still cover decent ground pedaling. You can always replace the engine or buy another mount kit or even a new bicycle.