A service like PayPal requires you to send customers off your site,
and 99.99 % of all payment gateways will take the customer off your site for payment
Unlike using PayPal where a customer could easily abandon the transaction when they get sent to their site to complete the payment.
...to be "Paypal" they know what to expect when they click on the pay button.
A lot of paypal love here, so my question is would you go somewhere else if they didn't take paypal? All paypal users will have a debit/credit card (if they're an adult) so do have an alternative payment method.
What is the best and most secure methods of payment?