Come on! Nobody?

I just cannot figure for the life of me why I need to root. I keep seeing people say this room is smooth no lag and all that jazz but my n7 never lags and it's stock out of box and I couldn't imagine it runnin smoother. That being said I guess I'm kinda jealous bc this is my first android anything and I don't get it like did my windows stuff. I would run Ubuntu on my win laptop.is that the equivalent? I always came back to windows anyways. I feel like since this is fine for me keeping it stock then I must not know something. There musty be appsthat I done know about this stock n7 is running fine to run pocket and rascally and chrome every now and then. I'm missing
something and don't know what or is.help

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