why crime is down and falling

You might have something here, as these games become more realistic they may produce the same adrenalin rush as the real thing. The problem is though there's no possibility of any reward like there is in a real crime. So if you're a crinimal who is trying to make money games won't cut it. If, on the other hand you are just looking for an adrenalin boost from shooting up somewhere then a game might do it.