Honestly Roots are a lot more painful to deal with than Stuns

Because you have the ability to still use spells and aren't completely unable to do anything but you practically can't do anything to respond

With a stun you know you can't do anything other than just wait it out, so its not as miserable as a root.

Honestly, with a Stun and a Root you basically accomplish the exact same thing. You eliminate the ability for the character to escape, except with a root you are being an evil bastard and giving them false hope of running away or being able to fight back.

So yeah, I hate Morgana.