There's no point in getting an electric bike and then just peddling. The battery and motor add a lot of weight.

If you mean use a normal push-bike, then as I said I found it less practical. My average speed with that is around 10mph, as opposed to around 15mph with the electric, and I'd arrive at work exhausted and sweaty - and there's no facility for showers. This sort of electric bike is a good compromise between a car and a push-bike, and ought to be considered by people who are too lazy for the push-bike.