My next bike will be a mountain e-bike. Downside is they're expensive. Upside is going up that steep grade, riding farther and faster and being able to pack more gear on your bike for hunting or camping. I personally believe it won't be too long before the majority of bikes sold have some sort of battery/electric assist.
My aunt works part time at a bike shop that sells these. I took one for a ride. It was a riot. Really weird to get used to at first. But, once I did you could really fly!
