I live in NYC and I think for A to B travel, an e-bike fits the size of the city well. It's not a tiny city by any means but I can often get to/from places quicker on an e-bike than taking the train or a car. If it's nice out, I may prefer it even if it's slower.

The problem for me is that riding a bike in the city can be unsafe - often my area is full of double parked cars even late at night and no respect for the bike lane (which to be fair is just painted on).