Depends on your sins, wouldn't it? Murder would be one term, but working for an digital ads company, developing dark pattern UI, or social media companies would be at least half of eternity.
Is eternity countable? I really want to know what I am in for, ya know. Plus, depending on the properties of the eternal manifold, maybe I can perform some useful closed timelike computation while there and use that to get rich when/if I return.