Well, if you have to deal with (some) grumpy taxi drivers who drive you in the most indirect routes, plus traveling with a family, it makes no sense to use taxis when one can drive and park exactly where one wants to go.

Have you ever seen the line for taxis outside Carrefour?

Nowadays with the economy down might be a different story, but I don't want to waste my time dealing with taxis when traveling with a family...