PayPal Merchant Account

I'm now several months of experience with PayPal as my merchant account. So far, so good. Integration was easy. The fees are easily understood and reasonable. The reports and technology seem to work. I've set up the account with a number of different users with permissions which is important to me.

Bottom line: I'm not sure why anyone doing online business would use a traditional sales guy and merchant account. They're more complicated, somewhat quirky, and rarely as dependable as PayPal.

What am I missing?