This is because paypal accept most the country and there are many ebay user who use paypal for long time
Paypal is an international. Most of the people in the world used PAYPAL. It is just high in charges but it is safe and secure.
I like MB too, however there are limitations.. US accounts cannot pay non-US accounts via transfer. there is a way around however, you can recv payments via the merchant sale way.
I really want to know which payment way can be much popular than paypal, all our customers are using paypal now, despite of the high charge.
For still prefer paypal especially for smaller amounts because I save on fees by using a personal account and having them send you the money as a personal transaction or gift.