I was only pointing out that with, or without NB, your cities can be protected. Many of us survived for many years without NB, and sometimes would wake up to cities in revolt, and sometimes launch late night attacks so the enemy woke up in a similar state. And coverage by your alliance is what could make or break a world.You don't even need to do that if you don't want to. On Eubea I have forum mod rights in my alliance, so occasionally I'll be up until NB kicks in monitoring things and editing posts as needed since things quiet down when NB kicks in.
Personally, I'm not a fan of NB for a variety of reasons, and it's definitely harder on players that work 3rd shift, or are in more remote time zones. But it is what it is, and will be a 'feature' of many worlds. Hopefully it doesn't get any more expansive.