Because of reviews such as these:
"A ground-breaking masterpiece. It contains so many examples of cinematic brilliance that it's a shock it won only one Oscar (for the screenplay)."
"Truly one of the greatest films ever made."
"A film that gets better with each renewed acquaintance."
"The amazing depth of story and richness of composition make Citizen Kane a must-see for anyone who considers themselves a lover of films."
"It is a work of art created by grown people for grown people."
"The most auspicious debut film ever for a director."
"Citizen Kane is the biggest cinematic landmark since pictures first started moving."
And after watching the movie (and learning what "Rosebud" means), all I have to say is
Seriously?
