I live in Leipzig, Germany, there are more and more cargo bikes for parcel delivery and families are often seen with bikes to get to the lake or to go to the parks.

Nevertheless I think cargo bikes have a big con, which is the price as well as their "single" use. That's why I personally prefer trailers, they are cheaper, not coupled to the one bike to function, and there are some which can be stored very good in a small flat.

Somehow they are not financially supported in Germany, what makes me sad.