If not for the cost I would probably have one. At the very least to help haul heavy loads from the grocery store faster, because a grocery trip takes 2 hours now, nearly half of that spent pedaling slowly. I would prefer a cargo bike with e-assist, something that could also carry my son, or perhaps even my son and my wife. Then we could possibly sell both of our cars and get my wife a newer car.
An e-bike would certainly make my hilly 31 mile RT commute easier, and faster. Faster would be great for me since I already have to leave at 6 am and don't get home until 6 pm on days I ride, because I'm slow. Don't get to see my family much on those days. E-bike would cut that time way down. But, I've been pedaling that commute for over 2 years now as a way to get in physical activity, and I would feel like I'm cheating myself out of that physical activity if I went the e-bike route for commuting purposes.