Not content to have fun
The environment also contributes greatly to a person's decision to marry. When you are surrounded by friends who are single and they enjoy the freedom of their lives, then you can feel the same. So, marriage is no longer important to you.

Fear of marriage is destructive
One of the most obvious fears when asked about marriage is, divorce. People cringe at the thought of divorce and all the emotions of trauma, the legality, and the complexity of the problems left behind. They feel unsure if all things will work well in the future.