Blue

Apropos to nothing, why are there blue pens? Why? Really, what’s the purpose of a blue ink pen? Anything official you want a black pen for, but it seems most pens these days are blue ink, and I have to wade through a bunch of stupid blue pens looking for a manly black ink pen. Oh, I cherish my black ink pens and try to keep from losing them. So, again, why blue ink pens? Is blue ink cheaper? Is there some reason someone would want their writing to be a fruity color? I know this is a strange gripe, but I hate blue pens.