i like using both...bitcoin is better
I agree bitcoin is better than paypal. And I have some feeling that paypal is going to adopt bitcoin. SO that clearly says that bitcoin is better than paypal. Because if paypal is better than bitcoin, then the developers of bitcoin are the ones who are going to ask paypal to adopt their service. But it tends that paypal is begging for bitcoins adoption.
For those who are using bitcoin and already knows it they will choose bitcoin than paypal but for other people that they know about bitcoin they will choose paypal.. and for other people even they know bitcoin they are still choosing paypal since there is buyers protection and sellers protection.. unlike in bitcoin after you send you can not cancel it or charge back like in paypal..
But majority of people would surely choose bitcoin over paypal even though theres no cashback feature and transactions are ireversible because in bitcoin money transfers and online transaction are quite fast compare to paypal and in terms of privacy you could always rely into bitcoin on his feature.