Personally I prefer BTC because it doesn't send your house address and what not via payments, What do you prefer: PayPal or BTC?
Both payment system has different domain , In mathematics we can say Paypal is subset of Bitcoin.
but sometimes it gets annoying when I want to buy something online but they don't accept BTC.
solution to this problem is to buy a bitcoin debit card , add bitcoins to it withdraw $$ from any ATM by deducing a small fee for that exchange.