Why does the pizza man get to your house faster than an ambulance?

because the Pizza man actually cares bout the people.

Edit: About the tip the people will give them.

They usually don't, but it depends where the location of both of either the pizza delivery person and the paramedics are. Consider doing a 12 hour ride-along with your local EMT/Paramedics to see how fast they really are and how hard their job really is.