Arnold used quite a bit of steroids, unfortunately. However, as he is still alive and apparently healthy he did not use to the insane extent that modern bodybuilders today use. Arnold's physique was excellent, and a young man might look at it and say, "I'd like to look like that."
There is a definite difference in the physiques of Mr. Olympia competitors today and the physiques of Arnold and his generation. This did not come from better training, but rather better drugs. Modern competitive bodybuilders now must weigh 300 pounds with 2% body fat in order to be successful. Don't ask the modern bodybuilder to run 20 yards or be alive much past 50. Few sane people would like to look like them either.