Birthday Parties

Explain this to me. My daughter has a birthday party today from 3-4:30. It is for her best friend and we're all going. But it is only 1 1/2 hours...why does it take us triple that amount of time to get ready? Find the present, wrap the present (a feat with no scotch tape I might add), discover we have no card, remember that everyone needs to be showered, dressed and fed and oh yeah, the dog would like to be walked. And I wonder where the time goes and why my girls are growing up so fast. We spend all the time getting ready to go somewhere!