Somehow, the idea of going to Ikea for dinner is like going to the supermarket to buy a sofa. Makes no sense.
I discovered Ikea's restaurant quite accidentally about 2 years ago. It sounds crazy but an Ikea visit was planned in our itinerary for our Orlando trip for the benefit of the designers and budding designers in our family. We were starving, decided to eat at Ikea and were very pleasantly surprised. Good food at very good prices. No one in our party of 10 complained which is saying quite a lot for my family.
I wouldn't make a trip to Ikea to eat, but if I'm shopping there, I'd definitely eat there again.