Well i'm gonna be that guy and play devils advocate here a bit..

World war 1.

After it ended and Germany was heavily sanctioned and punished, their military on chains and it's pride caged. It contributed into an excellent climate for somebody like Hitler to gain power. He was able to do so because he could blame everything bad on groups of people(in this case, the jews) and was able to rally an entire hungry and poor nation behind madness because of it. We all know this resulted in world war 2 down the road.

I'm NOT saying Russia should be forgiven easily or being let "off the hook", i'm NOT denying Russia is the agressor. By all means Russia should be removed from Ukraine and help rebuild Ukraine. The current leaders absolutely should be removed and made to answer for what they've done, as should their war criminals.

But.. never returning to normal relations again.. keeping the sanctions in place.. "make them pay for all eternity", place 3 generations of punishment on them(familiar?).. as i read people calling for.

Do we really want to raise the next generation of young Russians that have NO choise in current affairs with hate for us? To rally together and unleash somebody worse than Hitler against the entire world? Is it not better to help them find their moral compass instead?