None and anyone who watches it and are grown men and women kind of scare me
Fullmetal Alchemist is not only the best anime I have seen, but also one of the best t.v. shows from any category.
There were two versions of the show. The first one diverged from the plot at some point and imo ruined the show about 85% of the way in. Then a second run called "Fullmetal Alchemist Brotherhood" started off where the plot from the first show diverged form the manga. Both were good shows, the first having a higher production value, the second a better story ending.
Seriously check it out before judging others for watching good shows. We don't look down on people who watch south park or the simpsons, and anime is no different, it is just made in Japan. Some of the shows are adult oriented and should not be watched by children at all.