I don't personally care about achievement hunting or 100%-ing games, but otherwise I am exactly the same yes. If a game piques my interest it becomes a hyperfixation that consumes every waking hour, and I will spend as much free time as possible either playing it, watching others play it, watching videos about it, or reading things about it.
I also don't really understand people who are juggling multiple games at a time. "Oh, today I'll play some X, tomorrow I'll play some Y and over the weekend I'll enjoy some Z!". Sounds completely foreign and bizarre to me. I have my current game, and if I'm playing a game I'll be playing my current game. Who has the bandwidth to keep track of multiple games at once?