Sleep for me. It usually takes me an hour or two after waking up to start having an appetite anyway.
Of course I love good food, and not having to cook myself is nice, but I have such a hard time getting enough sleep, I don't think there's anything I'd want to get up at dawn to eat. And why, anyway? Couldn't I just eat it later? I'm guessing the questioner is thinking of something like an incredibly delicious bread that's fresh baked at dawn every day and sold out by the time most people get up. That bakery would be foolish to not do a second batch later in the day, then. :P
As for traveling long distances just to eat something delicious.. no, not really. Not just for that reason. I'm a practical person and tend to combine trips. Travel takes time and costs money, there's no way I'd do that just to go to some fancy restaurant to eat green tea ice cream and then go home again. Most expensive ice cream ever!