3) Because outside of progression, the raise utility should not be needed, so you are better off switching to another class for more damage.
Less than 5% of the population clears Savage difficulty content. So just because it's only good for progression doesn't mean it's not a worthwhile skill in general. Utility is utility. Playing devil's advocate, damage buff skills are also a "utility" in that although it helps you clear -faster- it's not "necessary" to use in order to beat the encounter. Speed running is a small niche of the community.