The thing is that you certainly won't use all of these abilities in normal play. Honestly, you'd be doing well to use more than,
say, ten abilities when you were out and about questing, especially once you're done leveling. Now, you might say that actually you play a resto shammy and you don't use all those abilities right now, at all. What's the problem? Well, first up if you don't use them,
you should have no issue losing them, right? But maybe you just don't go in for your utility spells. Maybe you're a dedicated set-role healer on a 25-man raid team, and don't even need to interrupt,
let alone start throwing grounding totems around and binding elementals.