[taylodl]

That world you describe is a dystopia and it would probably be better for humanity to wink-out at that point. Then again, maybe by then we'll have bio-engineered ourselves to have a native port into VR working directly with our visual cortex. Then again, by the time we get to the point we need to be serious about getting out of the solar system (100 million years) we arguably wouldn't even be the same species as today - especially as we'll have been bioengineering ourselves for millions of years by that point.

Not that any of this solves the problem of humanity having nowhere to go. The trip is ultimately futile since the stars you're going to are also dying.