I wouldn't use it as a camera, not pocket sized.

I wouldn't use it to play MP3's on the move, to bulky.

It's to small to watch a film.

I use photo editing software and a mouse is the best tool for this and having a large screen so you don't keep zooming in and out.

Having not used a device without a real keyboard, I don't know what it is like for creating/editing documents/spreadsheets/databases.

Also the files need to be able to be sent to & from other people using other systems, so need to be in a standard format.