Affliction, Balance, & Shadow. What do they have in common? One spell school worth a damn. They all three need interrupt reduction talents.
Healers have them. Because heals are all in one spell school. Healers gets locked out and they can't do their job. Martyrdom, Focused Mind, Aura Mastery/Improved Concentration Aura. Admittedly, Restoration Druids don't, though they can get by reasonably well with instants, thus not often exposing themselves to lockouts. Why don't similar talents for Affliction, Balance, and Shadow exist? All of the spells of any consequence for these specs are similarly all in the same spell schools. Shadow, Nature, and Shadow, respectively. Starfire? Searing Pain? The only one of the three with any practical use at all is PW:S, but even that doesn't justify being interrupted anywhere from 3 to 8 seconds (an effective silence).
Don't get me wrong, it's not a whole lot of better for Elemental either, but at least the Flame Shock + Lava Burst combo is still available and Astral Shift can help wait it out if it's a Silence + Interrupt like Counterspell or Wind Shear. Mages have multiple useful spell schools. Arcane Locked? Frost Nova or Iceblock. Fire Locked? Poly, Blink, Nova, or Iceblock. Frost locked? Sheep or Blink. Etc. Destro/Demo aren't quite so reliant on any one spell school. Fire get locked while nuking? Fear, Howl of Terror, pet summons, Shadowfury, demonic teleport. Shadow get locked? Keep on nuking and remaining a threat.
Juking? Yes, it CAN, work. But it doesn't always, and often enough you simply don't have time to juke less you or your arena partners take a dirt nap. These specs massively require some protection in this area, less interrupts continue to function as silences.