Midlife crisis
A midlife crisis is triggered when a Young adult sim transitions to an adult sim in the sims 3, and is shown by a moodlet which lasts 10 days. This was added in the generations expansion pack . There are a few ways to calculate if your sim will experience a midlife crisis through a point system;
Point system:
Low Career level or unemployed adds 0.2 points
Getting married early adds 0.1 points
Never married also adds 0.1 points
getting kids early adds 0.1 points
Having skills at level 1 adds 0.1 points
If your sim never moved it adds 0.1
for every breakup 0.05 points are added
for every divorce 0.1 points are added
for every death experienced 0.2 points are added
Having a relationship below the mid line adds 0.2 points
being ambitious or having commitment issues both add 0.1 points
(note: 'early' means at the beginning of the YA life stage, any amount of time after that and the points are less)
If your sim experienced enough of these events for the combined points to be 1, he or she will experience a midlife crisis. Once or twice a day your sim will get a midlife crisis wish, you may or may not choose to select it. It works like the general wish system . If you have selected the wish, the midlife crisis moodlet will turn negative until the wish is fulfilled. Wishes may vary but some will include getting a divorce, quiting work or moving house.
Once your sim's midlife crisis is over, they will get a moodlet depending on how many wishes were fulfilled.
6 wishes will give you the Supremely fulfilled moodlet (adds 1250 lifetime points)
3 wishes will give you the Pleasantly fulfilled moodlet (adds 750 lifetime points)
1 wish will give you the Barely fulfilled moodlet (adds 250 lifetime points)
During the midlife crisis, adults can also get the special 'feeling alive' moodlet when driving in a vehicle costing 50,000 and up.