Game Mode Rotation

Honestly, what the hell is up with the decision to ignore a huge portion of the community after we've asked time and time again for Ultra Rapid Fire to be a permanent game mode, and on top of it, the only time during the year Riot decides to release it, they limit it to THREE DAYS?! What is going through their greedy little minds? Crap the first year it was introduced, it was almost the entire month of April, the following year I believe was two weeks, and now 3 days? I know all the diehard fans of the traditional LoL are going to jump on this post immediately citing every reason why URF should never come back to LoL again, but get real, if you don't like the game mode, don't play it, it doesn't affect you in the slightest. But Riot.... PLEASE listen to the community, and if you won't bring it in as a queue-able game mode, at the LEAST bring it available for play in custom games all the time. I honestly hate playing this game on the standard mode due to the ridiculous toxicity and trolling that goes on, but I LOVE the gameplay itself, I have friends who enjoy URF, so I would play that game mode pretty much exclusively because it just isn't possible for people to get upset in an URF game, if they do, they're just trying to be mad.

Enough rambling, plain and simply put, I'm asking why does Riot refuse to acknowledge the desires of their customers.