This is a really interesting read for me, as I'm considering the purchase of a cargo bike. Apparently, I fit the stereotype pretty well -- highly-educated urban coffee-drinker (no yoga, no vegetarianism, though). The cargo bike would solve the problem of hauling hardware-store purchases home with kid and sans car. But they're expensive! 1.5 or 2 thousand dollars! So for now we're making do with the bus and the stroll…
yes, they are expensive, but once you have a cargo bike you can carry home a tig welder, alu pipes and all the other stuff to build a cargo bike :D No seriously, they are expensive but if you look at craigslist and similar, they keep their value if you take care of your bike. and regarding road safety, ride in the right tire-mark left by the cars. you'll be safe from dooring and cars have to slow down and change lane…
If you're going to do that, why not just ride in the center of the lane like a motorcycle?