Have I forgotten what it's like to play with Lego?

Let me tell you: yesterday my daughter (6 years old) and her cousin (8 years old) were playing with my daughter's Lego sets. She has several sets that I've bought her over time. She has a police car and a fire truck. They started playing a game where they crashed and the cars were destroyed in the 'chase.' When I got home, I saw that the cars were gone and pieces were scattered everywhere (many of them were from the boxes, so everything was mixed up with the car pieces too). I asked my...