Hi,
When I bought the E-Bike I wasn't sure to keep it. I said to myself, if it doesn't fit, I'll give it to my daughter. After six month, I wonder why I didn't buy it before.
The first benefit is the new way to feel the town. Paris is a beautiful city and cycling along the streets is very pleasant, you see the town differently, more peacefully.
That doesn't mean, your trip will be longer with an E-bike than with a motorbike. And this was a surprise ! There are about 8 miles between my place to the place where I work, with my motorbike the trip took 20 minutes, with the E-bike it takes 25 minutes.
The other thing is the physical activity. I'm 64 (in good shape) and I can feel it does some good to me. The effort is not too strong for my bad knee but if you set the electric assistance on the average position, as I do, that's a pleasant training for your heart.
What else ? Maybe the feeling that it is better for our planet, you know, small things that can help.
The only drawback I can see, is the problem of stealing. You always have to secure your bike, even for a small time, it's boring. If you live in New-York, you know the problem.