Yeah well and ideas occur to you after you’ve experienced something and by proxy that is one reason why people will always put their own basic needs above some abstract idea of a better world and everything. As opposed to “just think about a better world and talk about it and people will believe in it and fight for it”. Which doesn’t work, in case that’s news to anyone. Although in the 1840s, it really was.
You can absolutely want peace and even agree to concessions to Russia to reach a sustainable peace, but this point is absolutely valid: there must be security guarantees, otherwise Putin will just use the armistice to rebuild its strength and attack again.