Does anyone write on tablet?

I was thinking of purchasing a somewhat inexpensive 9" tablet and keyboard (all under $100) to replace an older laptop. But I honestly don't know much about them. Is it even possible to use a tablet with a word processor? And if so, does anyone use them to write their stories? How well does it work in this capacity? I'm wondering if it's more nuisance than convenience, or if I should just save for another laptop.