By contrast, opponents predict that the change will increase rates of marijuana use, and thus magnify the harm arising from that use. The adverse consequences of greatest concern include more marijuana-related road traffic accidents and deaths; more psychoses and other serious mental health problems among heavy users; and heavier marijuana use by young people, negatively affecting their life chances.
与此相反，反对者们则预计这项法案将增加人们的大麻使用量，而该行为所引发的负面效应也会大大增加。后果主要集中在更多与大麻有关的交通事故和伤亡；大麻滥用者患上精神病以及其他精神疾病的概率增加；以及滥用大麻的青少年前途的影响。反对者们认为，如果将这些效应的坏处与增加财政收入和节省执法开支的益处相比的话，显然是弊大于利的。