Seriously now. There are very very few times in your life - both past and in the future - when you will see something for the first time that you have heard about your entire life. You have heard of it - this planet Mercury - just about since 3rd grade when most text books first mention planets but you have never seen a picture of it that was anything other than an artists rendering or a fuzzy in from an earth telescope. Think about hearing stories and descriptions of your great grandfather and suddenly having a picture found in some attic vault....same difference.
Now we have an idea of Mercury....a first glimpse.