Go into any office block and there are the massed ranks of men in their black suits, white shirts, ties and black shoes. Maybe a slightly garish tie if they're feeling really bold.
If they're in a less formal workplace like a charity, they might roll up in jeans and a casual shirt. Or even an earring or two. But there the daring stops.
They adhere rigidly to the prevailing male dress codes as if it's a matter of life or death. Any move away from the officially sanctioned range of clothing is simply unthinkable. Men dress in a certain way and that's it.
Don't they sometimes think, I rather fancy wearing a skirt today? I wonder how I'd look in a frilly blouse? Suppose I wore a long swishy dress? No, of course they don't, because they're men and men just don't have silly girly thoughts like that.
Besides, if they wore anything other than orthodox masculine clothing (and especially anything girly) it would be the biggest social embarrassment ever. All their mates would laugh at them. Their boss would fire them. Women would titter and giggle. Shop assistants would give them peculiar looks. They'd be instant pariahs and freaks.
No, wearing interesting and attractive clothing may be okay for women, but men are different. Sartorial restraint is required. Experiments with clothing are frowned upon. Clothes aren't there to have fun with, they're the outward signs of male responsibility and propriety. Wear your suit with pride! Adjust your tie manfully! No frivolity please, we're blokes.