An advantage of a cargo bike is that you can keep an eye on your kid(s). Another advantage is that the kid can keep an eye on whatever it wants to look at. I believe it's much more fun because the kid feels more like taking part in the journey than beeing transported. Where I live everybody rides with young children, but hardly any trailer. About 15 years ago the 2-wheeled cargo bike came on the market and since then it took off, also the 3-wheeled ones got a lot more popular, and the trailers still left are usually old ones, trailers were never that popular anyway. 'Bakfietsmoeder' (cargobikemum) has been an official word for several years now.
If money really isn't that much of an issue, consider a bakfiets.nl. They are usually 30-50% more expensive than a Babboe, but they are particularly well made and durable, and come out on top in any test, usually on every point. They are really well thought through.