My cousin who died from heroin addiction said that marijuana was a gateway drug (granted, he never used it, but as someone who was a drug addict, he should've known something about it.) My grandma also worked as a nurse in mental health for many years and also said that it was a gateway drug. The research can say whatever it wants, but you can always get research to say just about anything.
Anecdotes are not statistical in nature, and as such demonstrate nothing in regards to statistics. And seriously, your argument that a drug addict will know something about it is weak as all hell. At least your grandmother is a credible person.
As far as research "saying whatever it wants", typically research like that does not pass peer review. How do you know the research that supports gateway theory isn't just "saying whatever it wants"? You stated that the link has been proven - if you're going to discredit research, then in what way has it been proven? Or are you just pulling things out of your arse?
