> being born into bondage board, committed by their ancestors to a shitty life in a metal tube, with their only purpose being a preordained duty to keep a few systems operational and produce the next generation of slaves just so that eventually someone can birth the arrival generation.

This isn't really so different from being born on Earth, except that we take being born on Earth for granted, and the population is really really big.

Ehhh I see where you're coming from but I don't think it's quite the same. Here on Earth is the default, and while each individual's opportunities are greatly affected by the circumstances of their birth and parentage, with effort and luck there's a fair chance to change one's stars.

Opting into an interstellar voyage is a significant reduction in opportunity for almost anyone.

And yes, the same could be said for a European colonist crossing the Atlantic to the Americas in the 16th century, and many of them did face starvation, exposure, etc, but it's different when you're largely committing yourself and your immediate family to those hardships, under the belief that the timeframe for "a better life" is the next generation. Committing intermediate generations is a different beast.

We're all living in the world created by our ancestors. All their short sighted fuckups (lead poisoning, climate change) or triumphs (tech, art) is ours to bear.