One could imagine a bit more advanced gene hacking tech that would allow to stop ageing and promote body regeneration. There are animals on the earth that do th

One could imagine a bit more advanced gene hacking tech that would allow to stop ageing and promote body regeneration. There are animals on the earth that do that (both not age and no cancers). With that timespan of journey does not seem so important. Although aliens would most likely be nothing like us, the best speculation guesses about the travel can only be based on general idea of humans and our limits, as thats only reference point. So while those arguments are prone to human centric points of view I usually side with them.