Given the opportunity, I would leave the Earth altogether to pioneer a new world. Its not in some vain idea of grand adventure. Realistically, I could die on the voyage. Exposure to radiation in space might shorten my lifespan many years. Landing could kill me. Living in a lower gravity environment might have unforeseen long-term consequences. Some kind of equipment malfunction or disease could kill our crops on the surface.
Despite all of these possibilities, there are just some of us who don't care. Simply staying home and safe in the cradle isn't really how I want to live my life. The mere idea of being one of a handful of the first people to step onto land that no one has ever been to before, discovering whatever's there, and building something new is inspiring.
I would be in a place that is free of the history and baggage that hangs onto the society I live in. I could build something new.