I have a Kindle and a Fire; they go everywhere with me, too, for reading and listening. But I need a real desktop to do real work.
Oh! Well, I don’t do any real work! Ha ha ha ha! ;).
My sons couldn’t live without real computers too, but I guess I don’t do much that an IPad can’t do.
I have a laptop - for upstairs use, desktop for projects, and a kindle for travel and in bed. Love the kindle and it gets a lot of use. Not for books but for internet and mail.