The purpose of NATO was to form an enduring alliance based on the continuing need for security.
The purpose of NATO was to counter the Warsaw Pact.
Tell me, is that a realistic prospect that NATO will fall apart in 2 years?
Make it 10, its not a realistic prospect, its basically certain, either it will fall apart or become so low key that it'd amount to the same thing.
If this, if that. Hypotheticals don't apply here.
No hyphotesis here, NATO is a political entity thats purpose was to be a counter to Soviet Union, right now its simply a club of convenience.