While certain skirt styles like the kilt have been around for centuries, it is still fairly uncommon to see men wearing skirts publicly. This could be due to potential social ridicule or just a personal preference.
Men should wear skirts
There's no logical reason why a man cannot wear a skirt if he chooses to.
Men wearing skirts is not a new concept
There is a long history of men throughout several cultures wearing either skirts or dress-like clothing and it has never been perceived as strange.