Hershey's standard milk chocolate bothers me (and many others) because of the spoiled milk/butyric acid smell, which is due to their original manufacturing process.

However, some people in the US like Hershey's, are not sensitive to the smell, and want the chocolate they grew up with (they might also like the acidic/tangy taste.)

But certain varieties of Hershey chocolate (Symphony, Special Dark) do not bother me as much.