I have found one situation where they’re useful: when playing inna woods, at the start, there aren’t many sources of morale early on. No electronics, no fancy foods or junk food. I start with low or no cooking skill, so can’t even make good foods. On one run I didn’t manage to make a fire the first day due to poor time management, went to bed cold and hungry and thirsty and wet. Next morning, morale was too low to cut down a tree for wood, and I wasn’t having any luck finding wood on the ground. But there was a book in the shack, so I read for a while until I was finally able to get a fire, some clean water, and some food.
I do agree with others, though, that food morale is really too high and too long-lasting. Sure, eating good food gives you a boost, but if I ate a really nice plate of scrambled eggs and then had to fight for my life while soaking wet and covered in blood, I feel like the scrambled eggs would kind of take a backseat. 
On the other hand, I don’t really want to complain, because the food boosts make the game a lot easier to play. Without them it might be a struggle just to carry out basic tasks. I suppose the whole system could use some tweaking and balancing, but I’m not volunteering for the job, that will be a lot of work!
