Life is not a game. If your strategy doesn't work in a game you lose and start again. In Ukraine, thats a 100,000 people that don't have another life. This is what is being considered. It is literally being measured in UPK (Ukrainians per kilometre). The death ball in real life will cost a lot of lives like D Day. The taking of Crimea might even need an amphibious assault. Even armed to the hilt could result in an incredible loss of life. There is an absolute possibility that it can fail and it is not boohoo, so don't bother then. If scenarios being tested do not end in a Ukrainian victory we will stop arming them.
The choice to continue fighting and risking life is not made by western countries. It is made by the Ukrainian people. And so far, their resolve to fight is strong.
The only thing we, in the west can do, is to support them. Giving them the equipment to fight is a small price, compared to what the Ukrainian people are paying.
Another price to pay is that of letting an authoritarian regime conquer other countries, or parts of it. As this will always result in a new invasion, just some years later.
Several Russian officials have already stated they want territories that include all of Ukraine, Poland, Latvia, Estonia, Lithuania, Finland, and even Alaska. Lavrov went so far to even state that the reunification of Eastern Germany was ilegal, insinuating it belonged to Russia.
So either we pay the cost of stopping Russian aggression now. Or we will pay it many times over in the future, with money and blood.
Appeasement never worked with authoritarian regimes. Quite the contrary, it emboldens them to continue to be belligerent.
And if the west had given Ukraine, the equipment it needs to win, sooner and in quantity, the human cost would be smaller.
A good example is that of the Kerch Strait Bridge. Had the Ukrainian forces received missiles capable of destroying it a year ago, Russia would have great difficulties in supplying their fronts with men and equipment.
This would mean fewer defenses for Ukraine to surpass, resulting in fewer losses.