Something may be wrong and stand a chance of improvement if someone else hears about it. I'm unaccountably sick. This thing doesn't work. All of these are legitimate, and no doubt there are more examples that are just as good. Then there's habitual complaining.
Some people find something wrong in almost every situation.
There's no one for me. Unhappy outcomes like these keep occurring regardless of the circumstances. So many different people in such varying locations and scenarios are afflicted by the ceaselessly complaining condition that it's necessary to surrender to sheer imagination to guess a universal cause. If it takes the form of a persistently thwarting and disabling psychological illness, then certainly patience is required and seeking remedies is appropriate, regardless of how annoyed one can become with adults who behave like whining children. When this happens I will gain power over you that I couldn't possibly have held otherwise.