Reproducing for the sake of doing so is clearing becoming passé [1] [2] [3] [4] [5] [6]. High level, the world needs less people [7]. Lots of roads to get there, all valid as long as they don't cause harm in the process. Live your best life, and for many, that means being childfree. If you're a decent, responsible parent, more power to you, as long as you're willing to shoulder the costs of your children. Culture and passing of it down is seemingly overrated in the current era (outside of some belief systems), and even the Mongol Empire ran out of steam (despite Genghis Khan's progeny and reproductive efforts). Build strong institutions that will withstand the test of time, versus traditional families, marriages, and progeny. Arguably, this is an indicator of an advanced civilization, versus relying on families and tribalism for strength and culture.
[1] https://ourworldindata.org/fertility-rate
[2] https://www.pewresearch.org/fact-tank/2021/11/19/growing-sha...
[3] https://www.census.gov/newsroom/press-releases/2021/childles...
[4] https://ifstudies.org/blog/the-rise-of-childless-america
[5] https://www.usatoday.com/story/news/nation/2019/03/29/childf...
[6] https://www.nytimes.com/2018/07/05/upshot/americans-are-havi...
[7] https://www.nationalgeographic.org/topics/resource-library-h...