Sometimes you have to weigh the larger cost of the "pain" you'd like to administer. I don't think anybody wants to see Putin have free rein to conquer the world, simply because he has nuclear weapons. But at some point, it's possible that the risk of burning it all to the ground outweighs dishing out American might and justice.
We are funding a proxy war with no oversight and no end in sight, with the only goal of removing Putin. We probably assisted with the destruction of the pipeline, if we didn't do it ourselves. The talking head representatives of our leadership are ratcheting up the war rhetoric every day. They want their regime change war, just like always, and it won't stay a proxy war forever.
There are plenty of other atrocities around the world that are equal to or greater than Russia attempting to reacquire the Donbas region, which we (meaning we the government and we the people) curiously have little interest in. But once again, we find ourselves on the verge of a long-duration overseas conflict, that may actually not stay overseas this time.
This is a very high profile, high stakes, undertaking where far more real people run the real risk of losing far more than will be gained by dishing out justice to Putin. Is it worth it?