I believe they serve their purpose in some ways and can be useful, however, I believe
the way they can label some people can be highly subjective.
They will place labels on people to rationalize how they perceieve them to be when
people are more than labels.
In my case, I was placed with many labels (autism spectrum disorder being the primary one) from a psychiatrist
when I would have simply said something along the lines of 'Greg is quite introverted, has struggled to maintain consistent employment and has no friends'.
Sounds a bit more straight forward than a report several pages in length that is from my standpoint hard to take seriously in many regards.
I think psychiatry may have a tendency to dehumanize people or lose the human aspect of them by virtue of placing labels to satisfy and make sense to the medical community.
In other words, their labels make sense in their world, yet the vast majority of people think outside the box they come from.