What's up with cheese?

I have noticed that today's cheese can and will go bad without molding.

I had some I had to throw away today, it was Wal*Mart brand shredded sharp cheddar cheese, I opened the zip bag it comes in now and it was rank, there was not a sign of mold anywhere.

The name brand cheese will still mold, I have had, for example the same type of cheese made by Kraft that molded and it didn't stink like the Wal*Mart brand.

I remember very well as a kid cutting off the mold and eating cheese that actually tasted better then when bought. Today? When it goes bad it's BAD.

Are we eating synthetic cheese now?