It's the convenience versus security tradeoff. PayPal can be very convenient. It's not secure -- with PayPal itself being the biggest risk factor. Zelle is much better, but is U.S. only (well, to clarify, ... it is for bank accounts in the U.S. only).

There really are few good alternatives for buying or selling bitcoin P2P. In-person Cash (also known as "Face-to-face"), cash deposited into your bank account (which few banks permit), postal money order, and prepaid gift cards. Other methods such as mobile money can work depending on the provider, and remittance services (i.e., remittance payment sent to the P2P seller) work as well but those both require identity verification / KYC.