To run win32 applications inside Windows operating systems that are too modern (e.g. for 16bit apps), in a browser or on macOS (recent versions of macOS do not have 32bit support and IIRC runnin 32bit wine was not easy).
Of course these are my guesses, I don't think the "purpose" of boxedwine is ever explicitly stated.
Of course these are my guesses, I don't think the "purpose" of boxedwine is ever explicitly stated.