English would be a more-useful global language — in that it'd be easier for non-native speakers to learn and use it — if we pedants who secretly look down on anything less than "proper" spelling and grammar (and I'm embarrassed to be one of them) would get over ourselves and accept simpler, easier forms as they naturally arise.
EXAMPLE: Less vs. fewer — it's disconcerting to read or hear, e.g., less and less people when the supposedly-correct form is fewer and fewer people; there's no logical reason that the former shouldn't do double duty, as it does in math.
EXAMPLE: Who vs. whom.
EXAMPLE: It's vs. its.
EXAMPLE: Different forms for the subjunctive — e.g., if I was a carpenter (supposedly-incorrect) vs. if I were a carpenter.