Using the same pathogen-stress model, there is a lower prevalence of disease in these economically developed areas, and therefore a reduced stress on reproduction for survival.
It is one of the pitfalls of different-age relationships.
Moreover, these patterns fit many proposed explanations for age differences: evolutionarily adapted preferences, socialisation, and gendered economic differences.
Hence, marrying an older guy evens out the real age of the couple! The latter is probably the biggest issue right now: I'm worried about making money while he wants to play all the time.
Description: These laws not only specify a legal age of consent, but also enforce a maximum age difference between the youths.