Like many of you, I love video games and I love playing online with other people. Weather it’s shooters, sports games, multi-massive online role playing games or even fighting games such as Persona 4: Arena, online offers hours of entertainment. While you might be able to play you’re favourite PC games online on dedicated servers, the same cannot be said for console, at least not without forking over some cash.
On the other hand if you aren't into many arcade games and most of the free games they offer are old it may not be worth it for you.
All in all, if you are a heavy PSN user I would highly recommend it but if you have a PS3 for the exclusives or purchase your games day one not so much but even then it could still be off good value.
In regards to Europe vs US for PSN; that's odd. Usually it's people from Europe that complain about not getting the games we get in the US. I don't have an example in mind though.