I feel bad about using and wasting the following things that end up in the garbage: 
  1. Paper towels.  They do a great job of drying things up, but sometimes they simply soak up water.  Clean water.  I feel bad using paper towels to dry my hands after washing them because I could just as easily use a washable towel or my pants.  All three objects perform the same function equally well, but only paper towels end up in a landfill.  Thankfully paper towels are biodegradable, so they won't sit around forever.
  2. Plastic bags.  On at least two separate occasions in my lifetime, I threw out a bag full of other plastic bags, simply because I had no use for that many plastic bags and they were taking up space.  This is still something I sort of regret, because plastic bags have a tendency to sit around in landfills for eternity.  And most times, they perform the stupidly simple purpose of transporting objects from one location to another.  You could use a billion other things to perform that function.
  3. Styrofoam cups.  I like me some smoothies, but smoothie-makers feel the need to package their products in landfill-destined polymer cups (which also stay around for eternity) because they keep things cold.  I personally wouldn't mind plastic (recyclable), metal, or even wood containers to transport my blended fruit semi-beverage from the store counter to my mouth.  I'm not that picky.
Wendy's a hippie, and it's rubbing off on me. #science