Here is why I find tablets appealing:
1. They're a lot more multi-functional and handier for everyday tasks than computers, believe it or not. I have a mini tablet that acts as an aggregator, camera, ebook reader, video recorder, PDA, music walkman, price checker, etc.
2. Great for keeping yourself occupied at the doctor's office or some other miserable place in an inconspicuous way.
3. The apps. There are some amazing apps that you can't use on a computer or laptop.
4. The internet is just easier to interact with and more fun to read on a tablet.