In your opinion, why are the early 30s an age where people typically have existential crises?

I noticed that many of my peers (myself included) are facing existential crisis. Why in your opinion, people in their late 20s and early 30s are so prone to crisis?

I noticed that many of my peers (myself included) are facing an existential crisis. In your opinion, why are people in their late 20s and early 30s so prone to such crises?