For the time being it's entirely worth it in order to do what we can to cut off Russia from the rest of the world.
At this point I don't see any resolution of this, that includes Putin. The war crimes are piling up and this time the atrocities are being recorded on video and shared throughout the world in real time. Regardless of what happens with Ukraine, the world can no longer tolerate a Russia with Putin at the helm, so the sanctions and military tensions will continue until that is no longer the case.
Russia's best possible outcome now, is for someone on the inside to take out Putin. It's really the only outcome that doesn't end with Russia being reduced to North Korea levels of isolation.