“Fear of missing out” is used to explain why people use social media items they don’t need nor want. But marriage is an example too.
I know there is wholesome cases where people want to start a family with other people they like to spend time with.
But a lot of the times it was also “Hey I am of the age my siblings and friends got married. I should meet people with the sole goal of marrying them and raising children.”
I don’t know a single person who would marry for that sort of reason. But the people I know weren’t under any pressure to get married. Some of them are single, some are in long term committed relationships with kids, and some are married.
Maybe if you live in a subculture that expects people to get married by a certain age this is an OK take. But it’s so far from what I see that it seems like a really niche perspective on a complex cultural institution.