Debunking whether and why cross-generational intimate and sexual relationships carry strong social stigma

This is my essay question: Gayle Rubin (1984) proposed that there are some forms of sexual and intimate expressions that are more respected and well-regarded in society, whereas other forms are seen as lower in the hierarchy and receive social sanctions. Exercise your sociological imagination (Mills 1959), critically analyze and debunk whether and why cross-generational intimate and sexual relationships carry strong social stigma in contemporary society.