Non units can't be damaged by the Firebreather's fire attack or the Chander's vomit
Making them extremely bad at dealing with anything a non-living creature. They can't even knock enemy doors at a decent pace as other creatures. And bad assaliants for the Dungeon Core.
Oh nooo you will have to beat your own daughter once she became an underlord.
And you only got a choice between greedy and selfish.
Now I feel pity for you :D