Fabolous -- Save America's Libraries ... So the Homeless Can Masturbate Somewhere

Libraries might be outdated with their ridiculous books made of paper ... but they still make great masturbation stations for the homeless ... this according to rapper Fabolous.

Fab was boarding a flight at LAX this week ... so we obviously had to ask his opinion on America's struggling libraries ... and the rapper made a solid argument for their place in the digital age.

Sure, real books are useless now ... but if we tear down the libraries, Fab says "where else are the homeless gonna get to j**k off at, man?"