Earlier quoted context omitted.
I think it's just a matter of time before people switch from using PayPal.
We thought this and killed our PayPal integration (went Stripe only) and lost double digits in sales (and received constant emails asking for PayPal). Unfortunately people want PayPal for whatever reason. Everything about PayPal from the merchant side sucks (bad API, bad recurring billing features, slow, no refund of fees for refunds from May, 6 months for someone to do a chargeback!, etc etc)
Beyond that, a big reason to use PayPal is that simply, a lot of people don't have a (internationally accepted) card they can use. PayPal is a useful middleman for those people if they support a payment method they do have.