Security guarantees also prevent nuclear proliferation. If Ukraine is defeated, the lesson many countries will learn is to have a strong nuclear deterrent.
https://en.wikipedia.org/wiki/World_War_II
Now remember that this time everyone has nukes.
Likely as it is that research can indeed confirm this, given the depth & tone of your inquiry, perhaps the most immediate convincing experiment would be best: find someone you can employ to harass and threaten your property and your person, occasionally to devastating effect, alongside another person who can study your productivity and wealth before and after.
Perhaps with further similar efforts here you can even persuade some people to volunteer for half of that project free of charge.
You just ask question after question after question after question, with an extremely disproportionate amount of effort required between you and the person you are asking, and hope that the other side eventually gives up.
Edit: jakelazaroff pinned it down for me, "sealioning"
We know the amount spent in support of Ukraine. The only missing piece of the puzzle is the specific dollar valuation of the deterrence value of further assistance to Ukraine to resist the Russian invasion.
If Ukraine regaining its pre-2022 (or pre-2014) borders is not worth a dollar value that exceeds the cost to achieve that outcome, then vardump's assertion of "money" as the reason is insufficient.
The full global consequences can be devastating.
What's the dollar value of that?
Sometimes your questions seem legitimate. Often they don't (they might be! but they don't read so).
But, this is probably getting a bit too meta and off-topic. Sorry for the derailment.