>>101581768it is the inescapable truth that energy always flows from high to low areas
the heat death of the universe is when all the worlds energy has flowed from high to low, when all potential energy is used up and the entire universe is the exact same temperature everywhere
the last star will have burned out, the last black hole has no more hawking radiation to give, and all the worlds radioactive sources have decayed to lead
no more meaningful interactions of particles can occur
reality, technically, exists but nothing os happening at all
the only escape is if it turns out gravity is stronger than dark energy, and we get the big crunch, starting the universe from another singularity
to get back to OPs point, an immortal man would live in a completely dark, near absolute zero cold, universe with nothing but lead and rocks for companions
