Why do we need popcorn?

people eat popcorn, because movie theaters sell popcorn.

movie theaters sell popcorn, because it is cheap and easy to make, so they can make a good amount of money on it

For some reason watching TV makes people hungry and popcorn is cheap and easy to make and that is why movie theatre's sell it.

People started eating popcorn at movies during the Great Depression, because it was cheap and easy to make. I guess it's a sort of tradition and Americans have acquired the taste after a while.

1. The unpopped kernels are cheap and take up little space in storage.

2. The smell is strong and universally pleasant: as soon as you enter the cinema the first thing you notice is the smell and have to consider buying it.

3. Little equipment is necessary to produce it fresh: a popping machine, bags, and melted butter.

4. Easy to grab and eat during movies without distracting you from watching it during the movie.

5. People crave salty foods because salt was a scare but necessary mineral for our Neolithic ancestors.