After waiting on the line with support for 4 hours and going through a phishing-tastic email flow, sure. (Maybe your credit card company has a better experience, but who wants to reach the point where you find that out?). With PayPal you just push the button.

Paypal has a bad rep from the merchants side. But for the users, it's just more convenient to link paypal email as payment method instead of others. To the consumers there is no difference between paypal, google pay, or apple pay. Paypal is more universal

A lot of the world doesn't have credit cards.

with Paypal I can link either debit or credit card, so I can choose whether or not I'm going into debt for a certain amount.

Chargebacks, at least where I live, are much harder if you paid with a debit card. Paypal refunds are just the same no matter if you used debit or credit.