Is spell dmg worth at high levels?

[PhantomSoul]

There have always been single target damage spells that are well worth it, like Crown of Stars or Spiritual Weapon.

I would very much not consider those "single-target damage spells" for a wide range of reasons, most importantly that they're action-economy boosting spells and that they're damage spells that actually hit multiple targets (even if over a longer period of time). They're essentially buffs more than damage spells.