I find drug abuse has become a major threat to humanity. Being one of the causes of crime, causing disorder and security, degeneration of the race, human dignity, undermining of family happiness, affecting health and especially infectious diseases. transmission of HIV / AIDS in the community; Consequences and harms caused by drug addicts cause serious impacts on economic development, threatening the stability, prosperity and longevity of each nation and each ethnic group. what's your opinion 
Dangerous drugs are abused because of the feeling they get from it. Euphoria according to them, and yes these are the most common effect on people that's why they resort again to this substances when they can't cope up with problem and stress.
Drug addicts has become a great problem in the society due their disturbing behavior when intoxicated by it. But the most important part of their life is destroyed by drugs, which is their families.