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 guess PayPal will only accept bitcoin when cryptocurrency is fully legalized or approved by government because PayPal still look at bitcoin as illegal currency and secondly PayPal operate in a centralized platform why bitcoin is in decentralized platform it will really take a long time before this can happen.