Why Does It Seem Riot Hates Mana???

This is a serious question and I really hope to see someone official explain this to me.

It just seems to me the even though most of the champs in the game use mana, Riot seems to have something against mana.

1. When they changed Sorakas kit, they took away he ability to give mana......this ability made her so unique because she was the only champ that could do it. And with the right items you could have a build that let you do everything every support in the game could do except stun and polymorph someone. With the right items you could heal, give mana, shield yourself or teammates, slow enemies, speed boost yourself and teammates & silence enemies. To me she was a beast back then and by far my favorite support to use........now i only use her when my adc requests her.

2. They removed mana pots from the game. I dont remember if this was done at the same time Soraka had her mana ability removed or shortly after that change. But why? Over half your champs use mana and some champs being created lately have very high mana costs like Taliyah.

I do sort of think they realized removing the pots was bad which is why I think we now have .