The Sims 3/Lifetime reward

As Sims fulfill their wishes, they earn and collect Lifetime Happiness points that can be spent on Lifetime Rewards. These rewards are in the form of an object or a permanent state to the Sim. Lifetime rewards can be very handy when used in certain situation as well as helping Sims with minor difficulties or annoyances. Sims also earn lifetime happiness every Sim minute, and even faster if their overall mood is high or elated.

Some rewards that come in the form of objects can be sold for Simoleons. Base game reward objects are worth 1/5 of the lifetime happiness. I.e. a Food Replicator that costs 50,000 points can be sold for §10,000. Reward objects from various expansion packs aren't bound to this. Some of them are worth less, and some other are valueless.

The Change Lifetime Wish reward becomes unavailable to any Sim that has completed their lifetime wish. Other lifetime rewards, such as Long Distance Friend, are rendered redundant by successfully completing skill journal milestones, such as the Super Friendly charisma challenge.