Sounds like you've never been there. I spent some time right outside Amsterdam (in Haarlem), and you can easily get a couple kids and a baby on a bike(in a bakfiets). You can easily carry all the diapers and baby feed you need for an outing in a stroller which is all you really need because nearly everything you could want is within walking distance.

-had 2 kids at the time(nearly 3 and 6 months), as well as cousins in town(same age) that we took on the bike as well, not that we used it that much, mostly to go out to another town like Zaanvoort on the coast (11 km away) or to the train station if we were going somewhere further.

Also, every single kid of school age got themselves to school by bike, so the whole pick up/drop up culture of North America wasn't happening.