If English as a common language was a real possibility, then I might accept it. Not without hesitation, but I think I would. But I couldn't imagine clearly such

If English as a common language was a real possibility, then I might accept it. Not without hesitation, but I think I would. But I couldn't imagine clearly such a possibility, because it is unreal. For example: why someone needs to abandon his/her native language? I personally couldn't just unlearn such a thing.