then explain to me where the credit card info is stored?
and apple pay is hackable after doing a google search.
http://www.washingtonpost.com/blogs/the-switch/wp/2014/09/10/so-you-want-to-hack-apple-pay/
In the article they mention that Apple Pay may be hacked if they get your phone and a copy of your fingerprint. The Exxon hack they pointed out was out dated encryption and a dumb key fob. Essentially Apple Pay emulates a chipped credit card. A one time use transaction key is generated for each transaction. So, if the credit card machine is breached (like Target, Home Depot, etc.) the thieves only get one time use codes that were already used, and now useless. This is why CCs are switching to chipped cards. I would expect that if your phone suddenly asked you to approve a transaction you were not making, you would be sensible enough not to give it your finger print...
You are also not trusting the iPhone with your financial information. At most you are trusting it briefly with your CC information, which is then replaced by a new virtual credit card number that is actually stored in the iPhone, and tied to the device. So, even if they get your iPhone and a copy of your finger print, once you report the phone stolen the virtual numbers are rendered useless and you still have zero liability for bad charges in the US. It is no worse than losing your wallet with your CC in it. At least you do not have to cancel your CCs too because your phone was stolen.