What about the real world? (Score 1)

Assuming it works, and we all (vast majority of humans) upload, who and/or how will we deal with real world issues? Issues such as procreation? Ok, say we learn how to emulate the random equal merging of two digital life forms. Then what about our environment? What if an asteroid threatens the planet? What if we war with an alien race? Dare we assume that our worldwide network is connected enough that we can instigate automated repairs to physical object such as an important network interconnect that was severed in an earthquake? Now the existence of humanity depends on a single physical system.