I think they can be quite costly, but isn't everything these days? I'd rather eat at a food truck than places like McDonalds which never happens for me...I just like the idea of better quality food and helping out the little guy trying to make a go of it.
Yes and yes, that's my preference as well though I do somewhat understand people on a tighter budget than us (such as the kids) preferring the perceived cheaper option (though now that they're that little bit older even they sometimes prefer the more expensive and better tasting/quality option than the fast food even if they can have "more" fast food for the same price).