Thanks for your responses, guys! This is just a funny (and now rewarding) personal folly of mine.
Of course serrated knives require much less maintenance in the sense that they never get sharpened. But I also think it’s a psychological thing: people just seem to think that steaks require serrated knives. (That’s why they are called steak knives 😉 .) Even at home I use serrated knives for dinner (and I think nearly every restaurant does this), although the serrations are not nearly as deep as on “steak knives”.
There is a tendency over here (Netherlands) for restaurants to provide their guests with better knives. Quite a few restaurants already provide their guests with non-serrated knives nowadays. Sometimes they’re Laguiole knives (but these are quite expensive when you’re a restaurant that needs to buy 100 or more of them) and more often Opinel knives.
Serrated knives in general are still useful when you’ve got to cut something that contains long strings of fiber. Whether it be a carpet, a pizza or… iceberg lettuce (I hope this is the proper term for it). Good idea, Steven!
And by the way, I love seafood and particularly oysters. For some reason there hardly exist any restaurants over here that specialize in that. The last time I ate that in a restaurant was in Boston. So if I ever go to Texas, I’ll drop you a mail Steven!