What is it about Riven?

Why is it that I hate Riven so much? What is it exactly that causes me to actually hate this game when I see her?

No matter who I play, no matter what items I build, I just find myself loathing the sight of her. Even when I am beating her (I 3/1/1 and her 1/3/0) as Lux top she just decides "no I don't like top anymore" and walks mid kills them then tp's bot and doubles them. How does that work?

Why is it she can dash 4 times, have an aoe knock up, a dash that is also a shield that ALSO stacks with damage, a massive cone execute and a large aoe stun AND everything costs nothing because she doesn't use mana?

All of these factors are multiplied by the fact that all she has to build it raw damage and cooldown and she then out tanks the tank and out damages the damage. How is that a good thing?

Oh but wait I'm forgetting. "I'm just bad. I'm rekt and just mad bro. Lern 2 uninstall %%%"

And the sad thing is that this thread will be burned and buried by everyone because I'm voicing my opinion. I just can't see the logic behind having a champion with so much mobility and gets even tankier the more damage you build and has cc and no costs.

No other champion makes me feel this way. No other champion makes me hate this game.