Cannabis has its problems as well according to this http://www.cbc.ca/news/opinion/canna...tion-1.4789187 article by a clinical psychologist.
"-for roughly one in 10 people who try cannabis, one potential impact could be addiction.
-cannabis can directly and almost immediately change your emotional state, such that your brain can become trained to respond to uncomfortable emotions with craving or a strong desire to use cannabis. Unfortunately, if a person practises coping with emotions with the use of substances, they forgo the opportunity to practise managing uncomfortable emotions in healthy ways.
-The diagnostic criteria of cannabis use disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), one of the main psychiatric texts that is used by mental health professionals to diagnose psychiatric and addictive disorders, includes features such as repeated use resulting in a failure to fulfil major role obligations; repeated use in hazardous situations; continued use despite social/interpersonal problems; cravings; tolerance; withdrawal; use for longer periods or in larger amounts than intended; persistent desire or unsuccessful attempts to control use; a great deal of time spent in activities related to use; reduced important social, occupational, or recreational activities; and continued use despite physical or psychological problems.
-Research shows that cannabis withdrawal is similar to nicotine withdrawal: The DSM-5 includes diagnostic criteria for cannabis withdrawal and lists possible signs as including irritability, anger, aggression, nervousness, anxiety, sleep difficulty, decreased appetite, restlessness, depressed mood and some other possible physical symptoms (e.g., abdominal pain, shakiness, sweating, fever, chills, and headache).
-A final popular misconception I want to address is the idea that only people with an addictive personality can get addicted to cannabis. The biggest challenge with this view is the contentious status of the "addictive personality" construct. There is no scientific agreement on exactly what constitutes an addictive personality and how exactly it relates to the development of particular addictions".