alt Hacker NewsIf you can pass on a chunk of customers sure. I've canceled a purchase more than once at checkout when I saw there is no PayPal available, if the website was unknown or looked a little shady, and I didn't desperately need the item. There are people who don't buy at all if there's no PayPal just because it's less convenient.
This. Also, remember that from the consumer standpoint, PayPal was the first ever trusted payment processor that didn't pass your payment account info (bank, CC#, debit card info) along to the vendor. Granted, they passed along your email+shipping address. But the vendor would have had that info anyhow if you were purchasing some physical item from them.
So there's a large swath of the consumer population that views PayPal positively and will skip a purchase if there's no PayPal option.