Cargo Folding Bikes?

Cargo bikes are sort of hot these days; but honestly I don't get it.  I am sure they're great to transport goods from A to B, but for families?
I guess I do associate them too much with: socks in Crocs shoes (the worst fashion crime ever!), long flowery skirts, Sweden, tie-die fabrics, beads and 'hippies-I-sold-the-car' types of people.  Apparently, there's even folding cargo bikes now...  Just get a bike trailer when you have to get stuff from A to B.