Yes, I must try to do it that way... in fact we already are, but it is a lot of money for a very basic INTERNET browser, which is presumably its main purpose.
The iPad was originally designed and intended to be a consumption device (music, media, internet, email.) It has evolved through apps and developers in to a useful tool and creation device but that isn't what it is out of the box. It is incredibly intuitive to use for its intended purpose of consumption. Once you get comfortable manuevering the interface and structure of the iPad in it's out of the box state you can start to see ways to accomplish the things you want to do.
I have not found iTunes very user friendly and could do with some advice about what to do with it. For photos, it is terrible because you cannot even delete any of the photos when they arrive on the ipad.
Through the use of third party applications from the iTunes App store you can compose music, share files back and forth from a PC, you can import and export photos and documents.