Osu! is a different kind of beast. It's a fun game, but play it for long enough and you'll start clicking circles in your dreams. Following the competitive / tournament scene is a lot of fun, but the fanbase is nearly as toxic as a chemical waste dump. Playing for hours on end is fun, but this is the only game I've played that makes your fingers and wrist physically hurt for a few hours afterward. How much time you decide to spend on Osu! determines how much you will enjoy the game. Do with that what you will. In the meantime, have fun with how many maps the community has pumped out, there are a few gems in there.