People are you naive? There's only one reason they only accept paypal: gain more money!
OK Ebay and paypal sometimes are pain in the ass, but finally you can run your business quiet easily...
I remember how everybody here promised hell to sellers because of the new feedback system. The result: nothing has changed.
Also, I put paypal-only in item description, but finally customers can use any way of payment they want, they just ask at the end of auction. Or during it.
We also have to put 4$ as shipping, even if you pay higher than this? Just put the right shipping cost in the description. Nobody of the dozens customers I had since argued about it at the end of auction.
And as a regular seller, I never had big problems too with paypal. Only a few refunds here and there. One time PP even refund the guy without taking any money from me. Anyway my advice is: take the money off your PP account as soon as possible. Your bank account will always be safer than PP one.
And my final advice is (especially to the overseas shipping): put insurance and registration on all your "big" shipping, you'll never had problems with this.
And my very very final advice is: you don't like ebay and their rules? Move your ass and do your own selling platform!