Part of it is religion/beliefs.

However, other part of it is entire economic structure is designed to grow or line must go up. Easiest way to make sure line goes up to have more consumers and since many Western Countries have less consumers, this means entire economic system is going to have a reckoning which those in power don't want.

The entire principle of conservatism is basically underpinned by personal insecurities, in every sector. This is why these people are so easy to exploit.

Every healthy living being both male and female has had this obsession since sexual reproduction began over thousand million years ago.

All of your ancestors during a thousand million years have had this obsession.

Are you sure it's not you who are weird?