As a Swede this makes me happy, partially because Finland shares a lot of their border with Russia and can now feel safe knowing they have the might of 30 nations behind them, but also because we're now surrounded by NATO countries. So no need for us to join, right? Right?! Let's remain neutral and a free haven for political dissidents and potential refugees of the future, right?!!
Is that how NATO is spoken about in Europe, that it is the might of 30 nations and not just the US?
The rest of NATO gives you basically another China's worth of military (they're #2 by spending), so it's not nothing, to put it mildly.
The geography controlled by and the economic power of the bloc is also important, for logistical reasons. Having not just open trade and maybe some donations in wartime but outright military support for your supply lines is huge, plus intel sharing and such.