Edit: Added a specific Use Case for clarity
Like most users I use parameters for my KWTs. Some parameters have a limited option pool e.g. paramater "WantACookie" can have 3 and only 3 values ...
Why does that parameter have any values other than "YES"?
Personally I agree with you, but what if it's a site that keeps you motivated to stick to your diet. Each time you select "No" it outputs a random motivational qoute and if you say "Yes" it sends you to that wonderful "Never gonna give you up" musical number on Youtube...