Why is the default value for flags.boolean undefined?

[srlowe]

It seems that although the presence of a bool flag causes the parsed value to be true, the absence of a bool flag causes the parsed value to be undefined (unless default:false is explicitly set).

Wouldn't it make more sense for boolean flags to have a default-default value of false?

[felipecrs]

No way! How could you intentionally have an "undefined" flag if we have a default-default = false?