Why isn't Riot releasing any of the good game modes?

I don't understand why riot keeps all of the good game modes that the majority of the community likes away from us? Nearly every time I look at the new game mode in the rotation, its either poro king, ascension, or doom bots. Those game modes are fun and all, but when its just rotating through those 3 for long periods of time, It makes you start enjoying them less and less. I know some people would, but honestly, who would choose poro king being up nearly every other rotation over something like urf or one for all? I'd even prefer nemesis draft over these same 3 crappy game modes. They have improved a bit by adding dark star singularity and blood moon, but they're still not as fun as good ol urf and one for all.

Is there a reason for riot not letting us play the game modes that nearly everyone really enjoys?? I'm not sure i see the logic behind it. And yes, I do understand that there are large groups of people that like the unpopular game modes. I'm not saying to completely get rid of the unpopular ones being in the rotation. They just need to put the game modes in some sort of order (EX: one for all, poro king, urf, ascension, etc etc) and then every week it rotates to the game mode that's up next.