Disappointment... One expecting his wishes to be fulfilled...
The problem is that people are expecting a lot more than what the iPad can do. Same goes with other devices, softwares, hardwares, etc... As a software developer, I had to face customer disappointment so often because people are expecting that if they think it's possible, it must be and should be provided for the same cost.
Getting someone to do things differently is another major issue. Having access to the file system, as it is possible on other OSes is being expected since this was the way for such a long time. IOS does provide another way of dealing with files. It may not be perfect, but does solve a lot of issues at the same time. How many times I had to explain "folders" to my family, how to save a file in the right place for later retrieval or simply how to search for a particular file. The iOS approach simplifies this. So my mom does not have to figure out where her documents are saved, they are in the application, pictures are in Photos, music is in Music... It may be limiting, but does make file management disappear...
The issue is not that the device is limited, but the user not adapting to the features of the device. The "way to do it" is often simpler because that's how the iPad was designed. Even if the iPad is technically able to do more, the philosophy design has it's reasons for being that way.
I do own a Playbook which is able to render flash based content. Overall, it's working quite well, but does trigger issues when browsing the web. Scrolling web pages are frustrating as the swipe gesture will not work on the flash applet since it can be interpreted by flash as a scroll movement for the flash content. So to scroll the page, you need to find a spot in the web page to scroll all of the content that is not a flash applet. And some pages are simply unusable since they are filled with flash based ads... Performances is another issue, where flash content can freeze the web page rendering, up to a point of even closing the tab web page is hard to do.
The Playbook is providing a set of folders to store your images, musics and documents like the "My documents" folder in Windows. This is a nice approach as you can store your music in a single folder. But at the same time, I'm pretty sure that my mom would be confused by a new app that needs to save a document and she would have to choose the right folder and would probably select the root folder or music folder because she does not know what to do. I much prefer the Playbook approach for my needs, but I do understand that the iOS approach eliminates the question of "where to save it?".
There are reasons for the iOS implementation, good and bad ones. But complaining that it does not meet your expectations and that the product is crap will not solve your problems. Simply adapt to the product or just move on to another one.
For my part, I consider myself as a power user. No other product can provide me with tons of quality apps. No other products can provide an ecosystem where my cell phone, my tablet and my TV can interact together (AirPlay, same account, iMessage, find my phone, etc..). No other products can provide a consistent experience between my tablet, my cell phone and my tv. It's not a perfect world, but it does provide more features and functionalities than what the competition has to offer. For what it can do, it's amazing, for what it cannot do, I move on...
My 2 cents!
VicoPad addict!