This is very dangerous thinking - we have the technological window of opportunity now and we need to use it NOW to get space infrastructure working.
We might not have the option in 500 years, even if nothing big wipes us out till then, there could be less serious catastrophes destroying our ability to do spaceflight damning our descendants to inescapable destruction.
We might not have the option in 500 years, even if nothing big wipes us out till then, there could be less serious catastrophes destroying our ability to do spaceflight damning our descendants to inescapable destruction.