Wow I'm really shocked by all the responses. I think the majority of the world - ie outside of our tech bubble - would much rather deal with a human than enter their order in on a computer. Particularly in a restaurant. In fact I'd go further and say that a good proportion of non-technical people would not only prefer to deal with humans, but would trust another human more than themselves with a computer interface.

Personally I'm techy and I still prefer the human aspect. In fact part of the appeal of going to a restaurant is to be waited upon - otherwise I might as well just order a takeaway online. Sure they might occasionally screw up your order but this doesn't happen nearly as often as this thread would suggest. I do eat out a lot and I honestly don't think I've had my order messed up in the last 2 years. I wouldn't say I eat at particularly posh places either though I do actively avoid most fast food establishments (not a snobby thing, I just don't like the taste of McDonalds et al) so maybe the issue of reliability is more subject to the lowest paid positions in the food service?

In any case, even if you did have your way and entered your orders directly into a computer, you'd still have to deal with the fallibility of humans with the chef cooking your food, waiter / delivery driver distributing your food, and anyone else who exists along the chain. In fact I wouldn't be at all surprised if many of the mishaps described in this thread were actually failings of those individuals rather than the order takers whom you assumed had messed the order up.