For 3 years that i used paypal way back before,i will say that Its not a scam ,cause i have not encounteted one to say that paypal is a scam. Paypal is the most secure online bank before till i met bitcoin.
I agree they are really secure but I feel that PayPal is more secured compared to bitcoin I may be wrong it's just my opinion. But yeah paypal is perfect for all the consumers or buyers it is really risky for the person receiving the money as paypal will do anything to help their users get their own money back even though sometimes buyers maybe cheating.