Instead of returning invigorated, enriched and changed by this once-in-a-lifetime trip, my Sim came home and forgot about it within a day, immediately reverting back to wanting to just eat, shit and sleep. Regardless of the successes your Sims achieve and the good memories they make, no matter how good life gets and how free they become to do whatever they want with it, they will ultimately, at the end of the day, just want to eat, shit and sleep. Until they die.