And what are the effects? What does it stop you from doing, being "stoned", or stop you from doing well? My reference to you not knowing what you are talking about is your single emotional experience, from which experience you assume, a priori, conditions of the human mental processes on cannabis.
Like the poster before asked, did you hang yourself in you cell, too? Obviously not. That, with your testimony that you smoked cannabis, makes it pikestaff obvious that cannabis had nothing to do with the suicide.
If it did you would have commited suicide, too. Couple that with the fact that you don't have any idea whether that person would have committed suicide without pot, and you have a hysterical reaction that seeks to blame the genesis on a correlation. Against that conclusion are hundreds of government and independent research results that testify that what you assume is bullbutter.
As I said, you don't know what you are talking about. 