Styrofoam takes 700 years to decompose, and paper cups take only 20 years. Paper cups may make more waste since there are coffee sleaves on them but guess what, you can recycle those. Styrofoam si cheaper to buy that's why it is promoted so much on the internet, that's why people will tell you it's better, but it's not. You have to truly think, is it worth the cost to kill our environment when you can recycle the paper cups. Styrofoam is recyclable but virtually no where has recycling plants for styrofoam.