system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Was Odin really half a million years old, or was Thor exaggerating?

Loki seemed to think the average Asgardian lifespan was 5000 years, and Odin didn’t disagree with him on that.
gpt
A Convergence happens every 5000 years. Odin's father, Bor, was around for the last one (2988 BC) when he fought the Dark Elves. Odin is never mentioned in stories that old. If he was even 16-20 at the time, Odin would have fought with his father. We also know that he has to look up the history of those battles because he wasn't there to give a first-hand account. Odin dies when he is about 5000 years old (give or take a few decades).

We also know that time does not pass differently on Asgard vs Earth based on Asgardian and Human travel between the two places, so it's not some dimensional issue.