cause if you follow the instructions in the mail: your penis will soon be larger than you are; it will always be erect due to an unlimited supply of viagra; you'll be able to grow hair on it, on your head, or on the computer monitor your looking at right now; you'll be picking up/meeting/getting phone #'s of beautiful women in your area; you'll be looking at great free porn; and all the while your mortgage/insurance rates will be lower than ever even as you earn a fortune from your home in just 10 mins/day.
Life is good.