Name a full member of NATO who has been invaded. Go ahead, I'll wait.
Even without NATO membership, China currently isn't occupying Taiwan. Guess why.
> Historically speaking, few of America’s international adventures have had a beneficial outcome. Pretending that the world ‘needs’ our meddling is a stretch. We need to be able to defend ourselves and to ramp for war quickly. The rest is pork for the military industrial complex.
Did you even read the first part of my comment? Do I sound like an apologist for the USA's recent foreign policy?
There is a lot of pork spent for the USA's military. Cost overruns and unnecessary systems abound. That doesn't obviate the need for a strong military to keep the peace for ourselves and our allies.
The world is different now than it was 100 years ago. Many counties have at least a few nuclear weapons. We can't afford to let things spin out of control. We need stability, and NATO provides a lot of that.
Name the last time a NATO country invaded another NATO member. Oh, wait, that never happened, and never will happen. That's called stability.