nostr is like email or the world wide web. it can't go down. certain email servers or web servers can go down - twitter was down earlier - but nostr as a protocol can't go down. just like email or the web, certain nostr websites or relay servers could go down, but dozens, hundreds, or thousands of these could still be running just fine. that's the difference between a centralized service and a decentralized service. this is what all of us need to help our friends, family members, and random people on the street realize.