You talk like you've never seriously have played a game. Its a great feeling when you are really in the game, in the zone. You are in your flow and your entire world consists of the game, there is no mouse, there is no keyboard; there is just you being immersed in the virtual world. You forget about pain, hunger, sleep and problems/responsibilities in your personnel life. You are in your comfort zone in a place that you find predictable, fair and you are constantly on the point between boredom (this game is too easy) and anxiety (this game is too hard). A perfect balance of challenge and you know you can always get just a little better at it, even though the skill in the game itself has absolutely no meaning in the real world.
I've played Starcraft II for a long time, its a true-skill RTS game (you wont get advantage for playing or winning more) that has a good matching system- you always play somebody that is close to your skill to keep the games interesting. I became pretty addicted and even my social networks got flooded with 'friends' from the game. So always when I got on-line there was a reason to play. And it felt good just to have something I was really good at, I ended up in the masters league which is about the top 2% of all active players. But at some point it became too serious, the people I played didnt play for their fun any more and I started to doubt if I did.
The point I want to make is that today with computers and internet there is a new opportunity for young people to immerse themselves in a virtual world. In this world there are no boundaries, endless destruction and easy access to games and being anonymous. Sure there are always people that dont do anything and will waste their time on anything; be it drinking hanging or watching television. But with the new technology wasting your time has gotten to the next level and has gotten easier.
This doesnt mean all games are bad though, but when we look at them we see they are designed in a way to attract people and keep them immersed, not particularly because the games want to deliver a good experience to an individual player, but rather because the game wants a strong community around itself that will keep players playing. You cant deny that games are designed in such a way because it is what makes them successful. When it comes to addiction and games, you cant say its the same with books or movies; I have never heard of somebody being addicted to a book.