Was the death of Hellenic and Norse paganism a bad thing?

[McNukes™ #NYCMMWasAHero]

Hellenism didn't just die. It was destroyed. As was non superstitious Hellenic thought. How it was destroyed (and early and proto Christian sects too) is inherently a bad thing.

Surely you mean "subsumed"?

Not completely. I'm talking about the literal destruction of pagan worship, temples and pagans themselves. From the Edict of Milan which tolerated Christian worship it took only 16 years before Constantine was ordering the destruction of pagan temples.

There were further edicts by Constantius II and persecution under Theodosius (including the first decree that homosexuality was illegal and they were to be burned alive) ending with the absolute prohibition of non-Christian public worship. With Marcian eventually confiscating their property and condemning them to death.

Christianisation was not a morally neutral act that was undertaken at this time. Or in later times. It could be coercive, destructive and persecutory.

I'd need to look into this further. However, Christianity very rarely takes such action without a strong impetus; for instance, Norse paganism was eradicated by Charlemagne because they would not cease their guerrilla attacks against Christian churches. A notable modern example is how Varg Vikernes (Louis Cachet) burned a church because he was so anti-Christian as a Norse pagan in the 20th century.