The goal is clearly to be on the #1 for you top keywords. Knowing how your progressing to this goal i personally see as being important. Also knowing if an certain keyword is not ranking as well or as quickly has you hoped can help you target the area in terms of content or however you choose to optomize your site. The reports are for entertainment if you dont action anything based upon them. With unlimited time one would want to target keywords with the same vigour but this is not possible (certainly for me ).