One of great things about bikes is how they can adjust to fit so many lifestyles and people. When my wife and I lived in a small apartment, we just had normal road bikes with racks for groceries; that was all we needed. When I injured my knee, we borrowed a tandem and she rode me around. When we had a kid, I started with a child seat over the rack, then when he outgrew that a small box bike (box in the front). 2nd kid, we got a normal-sized box bike. #BikeTooter
Now that are kids are getting older, one enjoys riding on her own bike, and the other one can go on the back of a mid-tail. Eventually, we'll be able to go back to normal bikes. And as we age, there are recumbents, tricycles, and other options available to us with varying types of assistance. There are also some really cool bike trailers out there. None of these vehicle changes required learning a new skill, or getting a change of licensing or insurance, or spending tens of thousands of dollars.