I think in many cases ebike can easily replace a second car in a family.
I have a short 15 minute 3-km ebike daily commute. But after 1 year the battery is obviously weaker. And i never made it past 2 years before a battery swap. I charge daily.
(I still kept my smallish car, which i now use much less)
There have only been two or three times over the course of about 7 years that having two cars would have been nice, but it obviously didn't make that big of a deal.
It's definitely helped keep us healthier as well, particularly compared to our similar aged friend group (~30 years old). We've both gotten comments from our physicians in the last few years because of this too!