Summary
This quote suggests that in the 20th century, sex has taken on a significant role in society, similar to that of religion. It implies that people may have replaced or turned to sex as a form of worship or a means of finding meaning, fulfillment, and transcendence, which traditionally were associated with religious beliefs and practices. The term "ersatz" implies a synthetic or artificial nature, suggesting that sex has become a replacement for religious experiences in the modern era.