There are a couple of ways to think about this that might help overcome your conservatism. First: how awful would you consider a world-wide apocalypse to be, w

There are a couple of ways to think about this that might help overcome your conservatism. First: how awful would you consider a world-wide apocalypse to be, where the human race is effectively ended? Let’s call it massively, enormously bad. How likely is it that that happens? Well, probably incredibly small, but not zero. Multiply the two together and you’ve got a weighting for how much we should care and prepare. In this case, the incredibly small probability is likely balanced by the enormous awfulness - meaning some level of reasonable preparation for existence beyond Earth makes rational sense. Second: think a thousand years into the future. Do you imagine that humans will be still only on earth, or will we have reached out and explored further - beyond our planet, beyond our solar system? If you can imagine any version of ‘beyond Earth’ - then Starship and Mars might represent the first baby steps needed to ultimately achieve that outcome.