I suppose everyone tells little white lies. Quite often they're necessary to make someone feel better or prevent feelings from being hurt. Whoppers? No, that's dangerous and they'll boomerang.
Eventually we must leave Earth-at least a certain number of our progeny must as our sun approaches the end of its solar life cycle. But just as terrestrial explorers have always led the way for settlers, this will also happen extraterrestrially. Earth is our cradle, not our final destiny.