I don't think humanity is toxic. You can talk to people in person and they are generally polite and respectful. I think social media is different because it tends to award the loudest and angriest with the most attention.

I like Nostr right now because it's friendly and productive, but it's also a very small social network. My worry is that as more people come in, that will be lost and it will devolve the same angry attention-seeking behavior as the other social networks.