I couldn't disagree more, many people may not fit into genders, but most people do and simply knowing whether someone is a man or a woman is very useful.
Gendered nouns though, like in French, Spanish, Italian etc. serve no purpose but do encode redundancy into the language which can be very valuable for speaking in loud places
It also makes you realize that all this pronoun craziness is silly and unimportant. There are much more important things demanding our attention. Pronoun battles are a first world problem.
Mine doesn't either (Indonesian). We don't have grammatical tense, we don't have grammatical case, we don't have conjugation, declination and we still have communicate effectively!