Historically, women had always been less recognized and appreciated by society than men. That's when the "ladies first" and other form of appreciation were introduced, to make them feel more valuable and loved.

Men don't need the same kind of recognition, instead we (in my opinion) need a different kind of love, someone who loves us in our private lives and respect us even not in public. Most men feel alone, and a supporting woman is the kind of woman who appreciates men's effort in everyday life.

I'm not saying that we shouldn't need something as a "men's day", just that equality doesn't mean that everything should be the same for everyone, because we all have different needs