What's the alternative? Hand the world to Russia? If you have nukes you're allowed to conquer the world for fear of retaliation? Sounds like an equally dark timeline.
But war is a racket.
There just exist some cases which you cannot argue in good faith (inb4: yes, Russia is obviously not the only one and yes, West also supports and supported many indefensible atrocities but no, it just doesn't follow that the West should let Putin get away just because of this).
If you expect Russia to be willing to find an agreement that does not restrict Ukraine's freedom or take its territories, you are wrong, or such a war would have never begun in the first place.