The game now has too many variables to balance it fairly

There is something called chaos theory where systems can be greatly affected by small changes, and the systems because incredibly difficult to control the more that different variables are introduced. This is how I feel League has now become.

I truly don't know if Riot is trying to balance the game so that everyone is fairly even or if they simply find that rotating strong champs is how they want to run business. The beginning of the year had Graves jungle just destroying people for months without any changes. Now he got nerfed to the point where he is below average and you never see him. It's just a dumb cycle. I personally hate the rotation of what items/champs are going to be the flavor of the month and things are being added quicker than they are being corrected. If that isn't the balance team's plan, then they are truly not paying attention to their game.

Update: I think many people here are trying to make a point that the game can't be perfectly balanced or even generally balanced. The degree of balance is obviously a sliding scale but my comment was regarding the balance getting worse than ever with the added variables. There is a difference between not balanced and REALLY not balanced.