I have no doubt if I was rich I'd have some top of the range 'complete laptop-in-a-phone' kinda thing, I may even have succumbed to the shiny white allure of the iphone.
However, I'm not, and I find my nokia 3310 makes n receives calls and texts, and..that'll do.
I've got a basic mp3 player (the Sansa Clip+, comes highly recommended, around £40, 8gb memory, and takes micro SD cards instead of having to pay silly amounts for a bit more space. Compact, simple, resilient to wear and tear, too.)
Then at home I've got a PC which I do my gaming, social networking, emails, and internet stuff on.
I think that while progress is great, and we've all gained much from these new breakthroughs, there was something to be said for being 'off the clock' when six o clock rolled around, you couldn't be called or mailed on the way home! Your boss could call you at home, but they were limited to pretty much asking you to come in early tomorrow, they couldn't send you extra work thru the phoneline
EDIT: watched the Lynch thing above, and I have to agree, you can watch some stuff on a 2 inch screen, sure, but most movies really do demand a decent sized screen and quality audio, not staring at a handheld on the bus with one earpiece in so you can listen to your mate while you're watching.