You walk in and there’s someone behind a table who will help you get something off the shelf to ease your troubles and change your point of view: libraries are bars for your brain.
Now, it’s true that just because a certain group has in the past been excluded from the mainstream doesn’t mean that it can’t or shouldn’t become part of the mainstream. There are legitimate arguments both for and against things like black history month, women’s studies departments, and LGBTQ spaces. But “Oh noes, what about the poor neglected straight white men?!” is not one of them.