Rotating Game Modes
You don't HAVE to play them. You don't HAVE to like them. They are there. They are a courtesy extended to players by Riot that allows something a little different each week for those who opt for it. Whenever someone cries and whines and complains about how the game mod isn't what they want or how they want it, I see a spoiled brat.
Rotating game modes used to be seasonal. OFA, Hexakill, and URF weren't always guaranteed each year. OFA was released twice in a span of years, not weeks or months.
So, how about instead of complaining about it. Appreciate the fact you even have it in the first place and say, thank you for once in your ungrateful existence!