There is a course in men's studies it is called HISTORY.
History is gender neutral.
Not really. For most of history, women, and non-whites in the Western world, were prevented from participating and even when they did often had their achievements ignored or claimed by those in power, i.e. men. Claiming that history is gender neutral is a bit like claiming that the South, pre and post Civil War, has been race neutral.
This goes into why there are women's and other 'person's studies'. From my discussions with my friends that are sociology professors and the like, when discussing things like sexism and racism academically, the critical aspect of such is who holds the power in the relationship. To put it very simply, racism in such discussions are not just the case of one race/sex treating another race/sex differently, but one race/sex having power over the other race/sex in society and using it to dominate.