They don't want to tell you the awful truth, the
iPad's storage is TERRIBLE!
Not only that, Flash/SSD drives are not erasing.
Say the iOS 4 and apps holds about 2GB of space, leaving you 14GB left.
About 2500 songs, not including artwork. Not including apps or videos or anything else.
So yes you will be juggling stuff on it and off of it constantly, and it needs a computer with iTunes installed as well.
SSD drives have limited writes as well, but the iPad is designed to be disposable, you buy the next one when it comes out next year and so on at $500-$1000 a pop. A real waste of money.
http://hardware.slashdot.org/story/11/02/17/1911217/Confidential-Data-Not-Safe-On-Solid-State-Disks
http://threatpost.com/en_us/blogs/apple-fixes-nearly-60-bugs-itunes-102-release-030311
http://threatpost.com/en_us/blogs/one-million-web-sites-infected-end-2010-030711
http://threatpost.com/en_us/search/node/safari
The iPad isn't a safe device to use online, least on a Mac one can change their browser.