> I think when your work is no longer required
i wonder if this is physically/mathematically impossible: the mere act of living involves processing energy, and therefore doing work :)
And there is a lot of energy to be processed in this Universe before the heat death...
If you can reach it... The universe is expanding, and matter is being dispersed by both that and other forces.
Mind you, there are places in the universe that we have no way of knowing ever existed... The non-obserable universe if you will. For when physicists talk of the observable universe, it is only the fraction we have any chance of receiving data/light/radiation of/from