This is a question of political opinion and values rather than empirical fact, so I can't give you a definitive "yes" or "no" — reasonable people disagree on this based on their political philosophy, national perspective, and how they weigh competing considerations. What I can do is lay out the main arguments on different sides so you can weigh them yourself.
Arguments that NATO is a force for good:
•Deterrence and collective security: NATO's founding principle, Article 5, treats an attack on one member as an attack on all. Supporters argue this has prevented major war in Europe for over 70 years and currently deters Russian aggression against member states.
•Supporting Ukraine: Many argue NATO members' military and economic support for Ukraine since 2022 has been crucial for Ukraine's ability to resist Russian invasion, which they frame as defending international law and sovereignty.
•Stabilizing post-Cold War Europe: Proponents credit NATO expansion with helping integrate former Soviet-bloc and Balkan states into a stable, democratic, prosperous order, reducing the risk of a return to historical conflicts in Central/Eastern Europe.
•Burden-sharing and collective defense: It allows smaller/weaker nations to not face larger neighbors alone, which can be seen as a stabilizing, peace-preserving mechanism.
Arguments against, or skeptical of, NATO's role:
•Provocation argument: Critics (including some realist foreign policy scholars) argue NATO expansion eastward after the Cold War provoked Russian insecurity and contributed to the conditions for conflicts in Georgia (2008) and Ukraine (2014, 2022). This is a contested but significant school of thought.
•Military interventions: NATO's bombing campaigns—Kosovo (1999), Libya (2011)—are criticized by some as overreach beyond its defensive mandate, with Libya in particular blamed by critics for contributing to state collapse and regional instability.
•Democratic legitimacy and accountability: Some argue NATO's decisions, driven heavily by the US, lack sufficient democratic accountability across member states, and that it entrenches militarism and high defense spending.
•Alliance politics and double standards: Critics on various sides argue NATO selectively applies principles of sovereignty and self-determination depending on geopolitical convenience.
•Non-Western perspectives: Many countries outside the Euro-Atlantic sphere view NATO as a vehicle for Western (particularly US) geopolitical interests rather than a neutral force for global good, especially regarding interventions outside its home region.
Bottom line: Whether NATO is "good" depends heavily on your starting assumptions—whether you prioritize deterrence of authoritarian aggression, national sovereignty, non-intervention, historical grievances, or a realist vs. liberal-internationalist view of international relations. If you want, I can go deeper into any one of these threads (e.g., the Ukraine war, NATO expansion debates, or the Libya intervention) with more specific evidence.