This is one of the difficult questions; an ardent yes can be the only possible answer. Drug addiction is due to habit creation and anyone can victimize at any stage. Nobody becomes an addict by birth and none of these are criminals.
There can be several reasons that lead a normal man to get caught in the trap of drug addiction habit. It is an adverse situation that arises in anybody's life. Such a person needs love and support to overcome his unfortunate times and start a normal life. This is most important to bring back the addict to normal life where he can be useful for society. Drug addiction is always avoidable and addicts cannot be allowed in society at any point in time.
The investments made by the governments in the routine infrastructure and other barren issues that account for millions of dollars. The expenses occurring in the rehabilitation measures for the drug addicts cannot be compared with any of the routine expenses as these are lifesaving investments for protecting the future of society.
Sometimes society creates an environment leading a person to become a drug addict. That's why society must take up the responsibilities to help in rehabilitation efforts and freely bear the costs occurring for the treatments. Drug addiction-related complications must be considered as similar to health problems. As we don't think of any expenses issue for those who suffer from critical illness likewise the expenses for treating the drug addicts must not be questioned.
The addicts require proper treatment, medicines, counseling as well as an empathetic atmosphere for getting rid of these habits for making a comeback and living a productive life. There are many addiction-related issues that put it aloof from the normal health complications as it is considered as a self-developed problem. Similarly, other health problems can also be considered as self-induced. All these factors make the addiction treatment-related expenses justified and fruitful.