A lot of nice rhetoric, but when it comes down to it, will you sacrifice YOUR children, YOURSELF or take a NUKE because someone "crossed the line" and invaded Montenegro, a country few can find or identify? As long as NATO was the major countries of Western Europe where America had vital interests, it made sense and deterrent was necessary. Now that every little principality wants to scurry and join NATO so America can defend them, while increasing the chances of being drawn into a war.
A LOT has changed since the 1940s when NATO was formed. Taking time to reflect and take stock to decide if it is really STILL in OUR best interests is prudent.
If we don’t want to defend them, don’t let them into NATO. If we are going to let them in, then yeah, we have to defend them, otherwise the alliance is pointless.