You did neither. You did what most prohibitionists do in my experience when discussing these issues. Talk long enough & self proclaimed “authorities” & always start pulling out fallacies. Fallacy = intellectual dishonesty = no credibility.
Remarkably, marijuana advocates commonly seem to reject looking at the evidence. You call this "pulling out fallacies."
In contrast, the experience of friends and my review of the evidence over the years led me to gradually embrace and vote for medical marijuana in Florida, albeit while continuing to oppose broad legalization. This makes for messy and contentious debates and unsettled policy that will continue to evolve with experience and evidence.