A pair of recent studies suggest that marijuana policy reform may be paving the way for a healthier, happier world in at least two ways. The first, released by the University of Buffalo, found that couples who use marijuana are the least likely to engage in, or be the victim of, domestic violence and abuse. The authors caution that while these findings are predictive--meaning couples who smoke are less likely to commit domestic violence--they don't necessarily draw a causal line between the two behaviors.…