i travel for work and have to eat out constantly. everything from high end dining to fast food has gone to absolute shit when it comes to food quality.  strangely, this is still somewhat dependent on where you live, at least in the case of the us. my best guess is that some of the more popular regional food wholesalers in the us have been shipping out borderline inedible food.  strangely, fast food isn't the category that in my opinion has lost the most quality. i'm pretty sure this is because they have much less overhead than a sit down restaurant does.  the absolute worst category is low to mid end "casual dining" chains like chili's and ruby tuesdays. another brutally hit category is sport's bar chains.  food quality as a whole has taken a huge nose dive in the states, my family spends the majority of time traveling and europe/japan and a few middle eastern countries still have good food according to them.
United States