“If you want peace, prepare for war.”

I’m just dying to hear what your solution is.

So we should just let Ukraine fall, which would embolden Russia to start wars in other countries to take them over, too?

Nobody really wants that, but considering the circumstances, we need to be able to defend ourselves.
Lack of military power is apparently still today an invitation for maniacs like Putin.
So it’s not actually money for war, it’s money to deter it. At what point have you seen EU being aggressive militarily?
EU was created to ensure the peace in Europe, but Russia has broken that thoroughly.