So if you want to be sure that you are secured allot on the internet while paying something use paypal for sure!!!
That might be from the buyer's point of view. But imagine if you're using Paypal as payment and you're the seller. Someone can pay you 1000$ on Paypal and can just dispute it and claim that his/her account was hacked. Imagine that happening to you. I think there's an ups and downs but if you're the seller and the buyer used Bitcoin to pay you, he/she cannot revert the payment. Once the money is received in your wallet, the buyer cannot dispute it.