Why are pot smokers so vocal?

I know I’ll probably get all sorts of negative backlash for this question, but I am very curious. It seems that both on fluther and in real life, pot smokers have a multitude of reasons as to why pot should be legalized and why it’s not actually bad for you. Where are all the other people with addictions? I don’t just mean people with drug addictions, I mean any kind of addiction. Why do we only seem to hear from pot smokers?