What's the point of having a iPod touch when many of us have a iPhone???
What do you mean what's the point? So you have an iPhone, yippee, good for you.
Personally I don't have much need for an iPhone; my Sony Erriccson W300i does all that I need phone wise, and my iPod touch is convenient enough for checking emails, browsing the web, iMessages, one or two games, setting up tv recordings on Sky, taking notes, music, videos (with a tv-out cable), camera (obviously not as good as the iPhone's camera but it does a good enough job and I have others...) etc etc etc.
I also use it nearly all the time for my scriptwriting, the Celtx app is great and I use a cheap knock-off bluetooth keyboard that I use very often.
I also travel around the world very often, and to be honest I find using an iPod is a bit safer; everything is backed up and if it goes walking, I'd still have a phone for emergencies. It's also a far cheaper device to replace:
Why would I pay £1000+ for a two year contract when I can have an iPod Touch 32gb for less than 250 quid? I'm relatively poor, I could do with the extra cash - backpacking is expensive!