Ask Poland and the Baltic states who are currently under the menace of Russian threats and invasion. NATO members are bound by treaty to fight. That is what protects them. The moment NATO falls to pieces, as Russia desires, there is nothing to stop them from sweeping across Europe.
Advocacy against NATO is Communist Propaganda and anti-American.
Then let Russia have Europe. I could really care less about it anymore.
Under the guise of NATO, Clinton established the first Islamic State in Europe. Under the guise of NATO, Obama and Clinton turned Libya into a failed state, and jihadi training ground, whose central bank was looted of $6 billion in gold which is still missing. Under the guise of NATO and American political correctness, socialist, dying Europe refuses to defend its own culture, while it is invaded by refugees from Africa and the 3rd world.
Let Europe defend itself.