The first item I bought from Ebay, was in 95 or 96, and was a 387 math coprocessor for $1. Paypal didn't exist then, and the postal money order protections, worked well for me (only ever had one issue, and when the inspectors showed up on their doorstep, very quick resolution). I was finally forced to use Paypal when the two merged and Ebay made it Paypal only, unless you had your own credit card processing (business). I am not fond of payment information, actually being stored anywhere online, and generally do "guest" checkouts, where it doesn't save it. On Amazon, I do the transaction, add the card, then delete the card once done.
I wish those disposable, one use CC numbers were available at my CU, but they aren't big enough.
Now, the only thing liked to Paypal is one bank account, which I had to do when I hit the "spending limit" while purchasing a several thousand dollar piece of equipment, for work (which went on to save our butts several times, since). I rarely use it for buying, and have never sold.