Because it is boring.The said genius of Citizen Kane still escapes me to this day. [...] it always seemed very long and very boring to me.
[...] part of the reason that we can't fully appreciate it because it has to be taken in the context of its time, and most of us aren't old enough to have that frame of reference.
It's like anything else that's influential or groundbreaking - sometimes, decades later, it's hard for the next generation(s) to understand why it was so unique or different. Like a kid today listening to the first Ramones album and saying, "I don't get what the big deal is...they sound just like Green Day..."
[...] sometime very soon I will probably piss you off.