Nope! This is just super easy for the folks who do. If you don't, no worries, it's great for you too.
You can checkout as a "guest" on PayPal and enter your card information the same way you normally would. The upside for you is:
1) you can trust that your money is going to a reliable source, because PayPal is super trustworthy for most folks (I mean... so are we, but in case you're new here, we understand)
2) they offer a lot of great protection for buyers in case there is any fraudulent activity or something else sketchy happens