I think some people prefer the singles. I mean, you ask any American what they like best, and it's gonna be a single, and those people might as well like a Greatest Hits album, they sell well anyway.
Myself, I am obsessed with Queen so I like each album directly, my favorite probably being 'The Miracle' or 'Innuendo' or anything else from the 80s.
"Please buy my upcoming album... I need the money"