Like a dog with a bone I don't want to let this one go. It has been in the game since the release. What I have observed is that once starting live mode in a new game the first automatic generation of townies produces a good variety of sims in age, gender and family structure with both male and female children being created and two parent families. The game seems to produce new townie families every time there is an age up cycle of the town's population. The first time there is an age up the game reverts to creating these single mother households with a teenage daughter and boy child. The familes are almost always dark skinned with dark hair with occasionally the daughter or boy having lighter skin and lighter hair.
There is a hot topic about a bug associated with small eyed and square jawed men whose features get changed when they age up. A lot of people are confusing that bug with they way the game randomizes townies. The complaint is that all townies are getting the small eyes and square jaws. Play the game long enough and all the townies look like clones. The issue here is the game randomizer and how it creates townies. The point is that the randomizer doesn't work. It doesn't randomize. It gets stuck on dark hair and dark skin. It almost never creates any blonds, red heads or light brown hair. It gets stuck with the small eyes and square jaws features when creating townies. And it gets stuck creating this single family structure.
http://img.photobucket.com/albums/v481/Barbara917/TheSims4/Townies.jpg
