Because Russia is still dangerous that is why. A massive defeat will change their attitude. We are still arming Nato as we should or do you think we should stop arming Nato since Russia is no longer a threat, which is what they are. They are the only serious threat except possibly China. They have large stock piles of nuclear weapons and that is another issue.
Russia is going to neutralize Ukraine and control the southern coast.
You need to start preparing yourself.
The real world is not going to bend itself to your wishes.
“Because Russia is still dangerous that is why. A massive defeat will change their attitude.”
So in your mind we should have a proxy war with anyone dangerous to change their attitude, right?
Russia, China, Iran, North Korea, etc...
One at a time or all at once works best for you?