I believe written letters actually weren't much of a thing back in 1000 BC. However, there was still real-time in-person communication, which can certainly lead to heated arguments no matter what year you live in. It seemed to have no problem generating persecution, pogroms, and genocide back then.

Maybe I'm a naive futurist, but I think the best time for a person to be alive is right now, if you're fortunate enough to be born in a developed country. And also maybe even if you weren't, as long as you weren't born somewhere awful like North Korea.