I wanted a 'take everywhere' computing device for years. One that could not only be taken everywhere, but one that I would actually remember to bring everywhere with me, and my iPad has fit the bill.
Work, campus, friend's houses, everywhere I go...except maybe for grocery shopping, it comes with me. Half the time I bring it with my and don't end up doing anything with it; like tonight, I was visiting old friends at the bar and brought my iPad.
It's nice to have an awesome computing device for when I need it, and to have the security to know I've got it, even when I don't need it.