At 36, never married, and no kids, I get the strange sadness of missing out on something you don’t really want.
The FOMO over not experiencing the excitement of major life events is real, even if you don’t actually want those events.
Your biochemistry can give you a few wobbles over this—I've had my own. Here’s what helps me:
Acknowledge your biochemical urges but balance them with rational thoughts. Just like you can choose professionalism over anger at work, you can choose your desires over the biological clock’s alarms. Remember, in today's world, after six million years of evolution, you have a choice.
Sometimes, I think about having a baby in terms of cost. The joy and excitement of parenthood come with significant sacrifices: lost freedom, sleepless nights, financial burdens, strained relationships, and years of toddler challenges. The excitement comes at a very high price. Others might be willing to pay it, but am I?
Same for me with the relatively short excitement of getting engaged/married... after that buzz is gone the cost to me would be 50% of my assets... still want to pay it? Probably not...