There's a lot more to addiction than that. Nobody needs to play Skyrim, but if when they're not playing it their thoughts are still dominated by it, then it can be said to be an addiction. Not that it's a problem i'll ever have. The game's just not good enough.

Over the years i've had several game addictions, but the only one to ever achieve it in the fullest sense of the word was Travian. It presents itself as casual and cutesy. Something you can do on your lunchbreak, take it or leave it or whatever. Then you start to get into it and really start to enjoy it, fantasizing about the glorius triumph at the end of it (a single "game" typically lasts 12 months...). Then you start forming friendships with other people who do it, strengthening the bonds of the addiction. Then the ever increasing amount of effort required to stay afloat starts taking its toll and you start to dislike it, but you can't stop it because to do so means everything you've done so far would be to waste and it would mean turning your back on every friendship you've made along the way, subsequently making their own struggle significantly harder, so you twist and bend the rules of real life to suit the needs of the game, casting aside real life friendships and doing only enough work to support your Travian gold habit and keep your internet connection up for the paltry 3 more months it takes for the game to end. And then endgame starts! And the workload quadruples and the stress levels go through the roof as your name is dragged through the mud in the ugliest of political battles waged parallel to the actual battle taking place on the server and you start to hate yourself for ever getting into it and for not having the strength (or for being too strong) to walk away from it. And then you win! And you wake up and start to establish the real cost of the fantasy war you've been embroiled in for 12 months and you desperately try to justify it in any way possible while trying to earn back the real life friendships that you ignored and try to get back into a decent paying job and something resembling your usual state of health and fitness. And then, a few months down the track, your online comrades contact you and want you to lead their alliance on a new server.......
You are confusing addiction and compulsive/problematic gaming, like most of the media. You can have a problematic behavior towards games, that's a problem that concerns you and not other gamers. There are certainly some games that are better ground to let you escape your problems (24/7 availability, several chains of actions to follow at the same time, captivating storyline, etc) but that doesn't make them addictive. The moment there are people (90% of players when it comes to MMOs) who are able to manage their time and play reasonably, that means the problem isn't the game itself. The problem is in fact individual problems, specific to the very player having a problematic practice of the game.
The issue with talking about addiction when there is none is that it's often used by the players who are in difficulty as an excuse "I can't be helped, this game is addictive, it's not my fault" or by the family circle as the wrong cause of a deeper problem. For example, spouses will accusate the game to steal the attention of their husband. Unfortunately, that loss of attention, that escapism by playing too much is the consequence of another problem which has nothing to do with games themselves. Problems of communication, problems of self-esteem, depression, etc. So basically, any violent reaction against the player or the game will only worsen the problem. Typically, problems of couple are woven and un-woven in couple.
As a consequence, if your bedtime is increased and it's a problem to you, it's a signal and it's not explained by "the game is addictive". If it's temporary and doesn't cause any planning problem, that's just passion. For most of players, there isn't much to worry about. Some people get nervous when they realize they become obsessed with a game, thinking of it when walking in the street, when dinning, etc. That's passion. When you love music, that's the same : you're also thinking of what you'll play next, what arrangement would be better, etc when doing something else. Fortunately, nobody claimed that the Ibanez RG Prestige (a guitar) was addictive. So stop with your "Skyrim is addictive."