I think we are losing the concept of mental illness, as well. It began as something that was defined as behavioral patterns out of the norm, that have a noticeable/significant/negative impact on daily living and persisted over 6 months. That's still the technical definition, but the DSM is beginning to add very minor things, such as caffeine addiction (which yes, you can get addicted to it; however, how does that have an impact on every day life? Again, there are some cases that I am sure it does impact daily living, but....not many) and when anyone does anything that society disapproves of--the person is automatically deemed mentally ill, after all, what "sane" person would do such a thing? We are getting to the point as a society that there's an increase in the percentage of people with mental illness and fewer "sane" people. It's great that we want to get people with the minor mental health issues treated, but I just think we will get to a point where 80% or more of the population has some mental illness trait or whatever. Then, those people become the norm and the "sane" people are the outliers. The norm is usually what most of the population does or acts like--when most people have some form of mental illness, how is it an illness?
I think we are truly losing the concept of what mental illness is and are arbitrarily throwing these terms out there and that only goes to worsen things for those who do suffer from true mental illness.