Sure, paypal is the big kid on the block right now, but who's to say they won't start accepting bitcoin as one of many international currencies?
(Edit: I just added "after 5 years" and "never" as additional poll choices.)
I think Paypal will never accept bitcoin because paypal operate in a centralized system while bitcoin is decentralized. Many people prefer paypal transaction because of the guarantee of getting their funds back once the business is unsuccessful so putting bitcoin to use might drastically reduced their customers. That's my opinion .