Even ignoring the fact that I don't like paypal's business practices, and I believe paypal as a service should not be needed at all, I cannot ignore the fact that if I use paypal, I will lose access to my money and I won't be able to do anything about it. Even when using paypal purely as a proxy for buying stuff (with no money in the paypal account itself), I've had accounts locked for no particular reason (with payments denied to the seller, but me losing the money), which meant I didn't get my product and precluded me from doing business with the same seller in the future.
Paypal is a huge liability. Fortunately, it can be avoided for almost anything that matters, sans Ebay.
Sometimes I need some obsolete, unique product that is available on both Ebay and Amazon (3rd party seller), but it's more expensive on Amazon. I buy it from Amazon each time just to avoid Ebay.
That said, they do not make it prominent and I often have to explain to my users how to find it.