shouldn't the main API be static?

[MeerKatDev]

In most use cases the call is used once, why isn't the library making static calls? Like ISO3166::alpha2(..).
Creating an object every time seems quite cumbersome.

[alcohol]

With DI being so mainstream, injecting the same instance everywhere hardly seems cumbersome to me. But to be fair, there is no real argument against making everything static.