I guess you are getting in to Go design philosophy. These questions are similar to "why go does not allow lint to just issue warning for unused variables / packages instead of giving hard compiler error?" The answers to these are unfortunately unsatisfactory, no matter how logical.
Reasonable thing is to use language which align your philosophy.
I've used Go for almost a decade and am pretty happy with it, including the rule you mention. It's fine to disagree with decisions made, it may or may not be heeded, but if no-one ever disagrees the language would be poorer for that IMO.
Reasonable thing is to use language which align your philosophy.