you don't help them to defend themselves ... you just using them as cannon fodder against Russians ...
even if Russians pull out tomorrow , who will pay for rebuilding Ukraine to what her was prior to war , you or Ukrainian themselves ...
The idea of joining NATO wasn't worth it for Ukrainian ...
by every passing day , Russians army will lose more solders and personnel and at some point , they wouldn't stop at anything except total victory or destruction , even Puttin can not control an army which sacrificed so much solders in war and just sign a cease fire ...