I have been a seller on eBay for well over 8 years now.Have NEVER had a problem with any payments EXCEPT when I used Paypal a few years back.I stopped accepting Paypal and noticed no change in my sales prices over the years except for the fact that I no longer had problems.THERE ARE A TON of people out there who do not accept Paypal.....more than you may realize.
If you are using it and are pleased...good for you.I hope that it works out well for you and you continue to be happy with them. If you like middlemen it is great. BUT....it is not for everyone and is not as good as many people may think.eBay tries to make them think that Paypal is golden....of course they do because they own the damn thing.
Do whatever works for you.