>>17485249Because you can check for a held item.
Plus, with Grass now being immune to Sleep Powder/Spore, Insomnia isn't too hot anymore. The only thing that could put Pumpkaboo/Gourgeist to sleep is Yawn/Hypnosis/Grasswhistle - of which Yawn is probably the most commonly used as a phazing technique, meaning you won't let your guy fall asleep. Hypnosis is a close second, however.
>implying anyone uses Grasswhistle 
