I was really thinking about buying an iPad, but here's a few reasons why I don't have one already:
1) I already own a laptop. I can take it anywhere, it gets great battery life, and it's more powerful.
2) I already have an iPod touch. I can use it to play games listen to music portably, and it has similar touch-screen gesture features. Sure, probably not as versatile as an iPad, but it'll work.
3) I don't have such a huge chunk of money that I can't wait to spend. iPad ain't cheap, and even though I can afford it I have other things I'd rather have.
If you're looking for an iPad and you want to buy one, why not buy from the link to the left ;) It helps me get a referral fee at no cost to you!