It's well hard this graphics stuff innnit?
Very good question John. People generally silently download, never ask this! As you know, I am not an professional graphic Artist...I do something just as a hobby.
Not absolutely hard, but takes a lot of time, patience, care; a single small button can take 1 hour to be perfect.
Thats can give the estimate how much energy total GFX team plus others (except me) is pouring here.
The technical part is not too much, but the sense of Art is very important. We are fortunate to see lot of Graphics artists together.
Its unfortunate that even today, many people thinks that "Photoshop" has some "hidden button" , pressing which can produce all the things very easily.
I really feel sorry for the underrated graphics artists, its not hard to tolerate when I am doing anything any people is saying nothing (NOT IN THIS FORUM), because I do it as a hobby. But, its very hard life for the professionals.
You will see lot of works, very fantastic works are just given for free by the pro (In DeviantArt, many blogs, Websites etc)...I asked an artist, she was allowing to download a particular brand soft drink bottle psd, she said, sometimes the final work is canceled by the party, so, she often upload and distribute there.
I felt very sorry after hearing it...please try to say a thanks when you download a stuff from anywhere in the Internet, atleast he/she will be happy seeing it.