Why are so many random sims shaped like a pear?

Pear shape is a natural shape for some humans. So is the hour-glass shape. Men and women tend to get broad across the beam, as my mom used to say. Too many years of sitting or something. LOL Or just where the fat settles as they gain too much. As for my Sims, I've had some pretty hefty ones generate in my game, too. But I no longer live in CA where bathing suits tend to be the outfit of choice so they're overly weight conscious. I now live in what I call 'Snow Country', and I'm happy to report I've just had my 12th White Christmas in a row! Merry 5th Day of Christmas, by the way. It was all of 20-ish degrees F, this morning. Brr. But, I've seen more overweight people than I ever had in my long life since we moved here. I tend to run cold, so even overweight I was still cold. Epic fail on that experiment. Glad to be lean once again! :)

I just tend to let my Sims be Sims. I don't fuss with the generated ones. I create my own in CAS and play them.