I think the one reason above all that we decided to take our car, was the fact that we could bring our dog Pip. It's not really a family adventure without him.
We have driven in Italy but always a hired car, so that adds more to the nerves. This time it was a bit more relaxed, our own car, packed with whatever we wanted to bring. Although driving on the other side can be a bit nerve wracking, we adjusted and stuck to our maps, breaking our journey every two to three hours.