We like them because they are so…QUICK! We erected a grocery store within 10 minutes, and then got to work on the clay food. Not for children who like to gnaw, because the small magnets inside tend to fall out from time to time.
The pieces are a substantial size, so it’s easy to build something large where all kinds of toys can interact. I find them user-friendly for many kids, whether or not building is a preferred activity.
The Magnatile wagons add extra play-value, but matchbox cars also work fine.