Personally I also cant understand why people think desktop computers are going to disappear. Sure, for some 'light' users I understand the move to a tablet or notebook. But people that need to do productivity stuff, the occasional game or in general do more than just a Facebook update now and then are much better off with a proper keyboard, mouse, and big / dual screen.
You answered your own question buddy. The "But people that need to do..." bit says it all. Most people are light users and just don't need to do more than an FB update or collect email. They play games on console/ pad/ phone and they communicate via phone/ pad/ console too....
..yup, love it or hate it, you can't deny it.
As for me, my phone is a Sony 610i, it's ancient. It plays MP3's fine with it's 2GB card and does SMS etc..
That's about all I need from a phone to be honest.
My netbook gets used for a bit of video playback on the move as well as some word proccessing.
Games... ..I play them on console at home (Wii, PS3, CD32 etc.) ...and yes, on PC too.
I don't own a pad yet but I would very much like one. One with a good digital paint app and a long battery life as it would be for digital art and ebooks mostly.
As for the question of doing without my main PC, no chance! It does seem to be shrinking into a quieter more solid state beastie as time goes on however. I remember the times when I needed huge cases for all my drives and cards. Now I think of NAS and USB instead.
As for Amiga, I do Amiga stuff for fun, don't we all?
