I wondered the same about everyone back in school, I grew up seeing everyone eating sunflower seeds during lunch hour so much you would see the shells all over the school floors, so much that (in elementary/middle school anyway, not in high school) the principal banned them and told the small shops in front of the school to stop selling them.
@Dex Stewart
There are people who soak butter on everything? Everything as in the same way people put salt on everything?