French people call food processors "robots", which I find quite adorable. My mom had a food processor, but I think she used it about twice a year, and then only to chop cabbage for cole slaw (yuck). It was presented to me as a very dangerous, impractical tool that was a pain to clean and might chop my fingers off.
Since acquiring my own robot, I've come to regard it as the most indespensable tool in my kitchen. This one cost me 20€, so it's not like it's a huge investment, and the returns are so great! Check out the selection on ebay.
Most robots allow you to blend, chop, grate and slice: all at the push of a button. Sure, it takes a little bit of effort to hand wash all the separate parts after use, but that's nothing compared to the work of finely chopping six onions, for example.
(Update: I should note, before giving my mom the link to this blog, that she has seen the error of her ways and now uses her food processor regularly to make all kinds of tasty things. And she's a great cook! I'm just not a fan of cole slaw is all...)