I don't. But if you do, this is probably why: [Disclaimer: This isn't exactly news.]
The thing is, Apple has not created a demand for tablets, they have created a demand for iPads. In their ads they show cool people doing cool things with the iPad and people want to do those things the moment they see those ads.
That's fine. Just don't do this: [Please.]
h/t iPad News Daily
Update. Apparently some researchers already knew this one year ago but here's yet another reason why I don't want an iPhone or an iPad: Why and How Apple is collecting your iPhone location data. I care about my privacy.