strictly speaking facts a society needs to reproduce somewhere close to replacement level or above in order to have some semblance of stability, what OP likely means is that they had kids A) because they wanted them and B) because they don’t think most people make good parents. By having kids they contributed to the birth rate and therefore (hopefully) removed some unfit person’s decision to become a parent because the birth rates are horrendous. Also having kids when you can likely manage to actually raise them properly results in a lower ratio of spoiled brats in the population down the line, idiocracy sadly was very on point with the movies observation about reproduction behaviour among different education levels.