but bitcoin has more advantages than paypal. although bitcoin is still difficult to use for online shopping, because it is still rare online store accepts bitcoin, it does not matter. hopefully in the future buy and sell transactions which use bitcoin are increasingly widespread. and this is only a matter of time. despite the fact that the current number of online stores that accept bitcoin gradually increasing.
There so many reasons, why do peoples still not accepted bitcoin as payment method, the one reason is they the sellers are too worry with bitcoin's price, the volatile's nature of the bitcoin actually , or they are too lazy and ignorant to learn what bitcoin is and how bitcoin works, but i think they would accept bitcoin if their costumers keep asking them to accept bitcoin