Interestingly enough, this thought comes to me as I'm devouring my dinner at a local buffet-style restaurant establishment. Maybe it's due to the influence of the Food Network, but it seems as if I have recently trended towards explaining technical concepts with food analogies.
Quality data fulfills the business' needs. Where as, mass quantity of data may satisfy the end-user's wants. Of course there are trade-offs!
Sure, while standing in the buffet line, if I'm asked what I want, I'll ask to have food items piled on to my plate overflowing onto my tray. However, when I sit to consume the food (read: querying data), it takes longer to load it all off of my plate and into my mouth (read: generating report), to the extent that I'm becoming groggy and sluggish (read: lag in rendering output).