Alternatively, if we don't become a multi-planetary species, we will be exterminated by a meteor. There's enough excess to do a bit of species saving multi-tasking.

For an alternate perspective, the development for this (which includes future launches) was only 80% the cost of ~500 miles of railway in California! [1]

[1] https://www.kabc.com/2026/04/06/high-speed-rail-cost-now-at-...