I don't think it's that games aren't difficult anymore, it probably has more to do with the fact that we have all gotten better at gaming. Think about it, how long have you been playing games, then think about how many different rpgs, shooters, horror titles,fighting games, and sports games you have played in that amount of time. Know think about the mechanics that modern games still share with all those old games. The fact that you are coming into every new game you play with all your experience and strategies means that you are able to deal with whatever the game throws at you despite the fact that it may be slightly more complex and difficult than whatever you played before. Walking anywhere now is easier than babies first steps because of a lack of experience, not because there is a difference in difficulty, the mechanics of walking are the same, you just know how now. Or in gamer terms any new Super Mario bros is easy because we all beat Super Mario world.