The only "reason" to do Savage is if you enjoy doing it.
If you do not enjoy it, do not do it.
Do not let anyone talk you into doing it.
And don't let SE bribe you into doing it; as you noticed, outside of savage you'll get gear that's overpowered for everything-that's-not-savage in the same patch; get mostly equivalent drops for everything but the weapon one patch later; and gear that blows it out of the water 2 patches later.