IPhone data plan cannot be removed in the future how is this possible what if i decide i don't want an iPhone anymore or i lose it?

You can turn off the iphone data plan. Simply get another phone and call at&t and tel them you dont want the iphone anymore they will ask you for the ESN of the new phone and you are done. I know that when you get the iphone they say "your signing a contract to keep the iphone plan for the life of the iphone" but they dont make you as long as you have a new phone that line will be associated with