Many do not. There is a theory of something called the Power Process, which states that for people to be happy, they need goals which require effort, and need to achieve at least some of those goals. The lack of meaningful goals which require effort in the first world may be responsible for much of the depression, suicide, and other issues that plague us today.

I found this Medium post which quotes the relevant parts: https://medium.com/chris-messina/surrogate-activities-the-po...