Quote Originally Posted by Dregenfox View Post
It isn't useless...just extremely clunky to use. Dissipation is equal to 2400 pot in heals + 20% healing potency for 2400 mana which is more than worth it.

Main issue is that it's best used while AF is under CD, and that you need to remember to resummon your pet. Do any of the above incorrectly and it's value is greatly diminished. Really wish they would make some QOL changes to this skill.
Basically, does the fairy contribute to 20% or more of your healing. If it does, then it's not worth losing the fairy and all the skills it brings.