I noticed that when you've ran through a pond your items quality drops significantly. This makes sense for some items but not for stuff already inside containers (canned food, vitamins etc etc.). I can't quite remember anymore which stuff was ruined and what wasn't but anyhow rags getting ruined is fine by me but vitamins in a sealed plastic bottle is a bit weird.

Also when I managed to fall off (on purpose for a change) the second floor at a barn and later discovered my body everything was ruined including all food items, rags, sewing kit, jeans...maybe it's just me but I don't think cloth takes damage when falling 2 meters...at least not the piece of rags in your pocket.