Why 2001 is Insanely Overrated in a Nutshell
One of the biggest points of praise for this movie is the open ended last act which encourages the viewers to discuss the meaning. Ambiguous storytelling is only worthy of praise to a certain point, until it becomes so ambiguous that it loses all meaning. It's much easier to keep something completely open to all manner of interpretation than to write something with an actual conclusion which takes genuine thought and creativity. This level of open ended storytelling is simply lazy.
Special effects were revolutionary though, i'll give it that much.