So now I've been given 3 reasons why Dark Side is a great album:
1. It's better if you're on drugs.
2. Some of the lyrics are sheer poetry.
3. You can't appreciate it song by song, but only as a whole.
Yeah, sorry, none of this works for me. If I can't listen to it song by song, what's the point? For me, a GREAT album has to have GREAT songs. There are other Pink Floyd albums that have more great songs than this album, therefore I like those albums more. The drug argument isn't a good one because the same rule might be applicable to all music. As far as the lyrics go, I've always felt that there was a certain level of pretentiousness there (not that there isn't in Led Zeppelin and Who lyrics as well; this whole era has that aspect to it, which is one of the reasons it's so awesome IMO.)