Why do these hoodlums find it necessary to destroy other's property by tagging?

i hate taggers too. this happened to me on our garage. they're punks who need a life. for us there was a program that had someone come free and clean up the garage for us with a pressure hose and other things. i am really sorry this happened to you. i hope they have to pay and go to jail. ask if your area has a program that cleans up tagging