Because they're conceited & think everything should be all about them?
Maybe they feel one day out of the year is not enough for half the wold's population?
So they're greedy? ...There's only one international men's day.
Greedy? On the contrary... my point is that to have only one of 365 days dedicated to one of every two people seems to be an under-representation.
Maybe because they think it's patronising. I know I would.
I don't know any who are against it. In fact in one job the (male) boss bought all the women flowers. :)
didn't even know there was a day..
Because some women are against everything.
Seriously, I think it's because there isn't an International Men's day... so, the IWD would be discriminatory.
There is an international men's day. I googled to check first - November 19th