Tracking a group of children from preschool until age 18, the two University of California at Berkeley researchers found that "adolescents who had engaged in some drug experimentation (primarily marijuana) were the best-adjusted in the sample. Adolescents who used drugs frequently were maladjusted, showing a distinct personality syndrome marked by interpersonal alienation, poor impulse control, and manifest emotional distress. Adolescents who, by age 18, had never experimented with any drug were relatively anxious, emotionally constricted, and lacking in social skills."By age 18, I had never tried any illegal drugs (still haven't), and I can confirm that "anxious, emotionally constricted and lacking in social skills" describes me quite well at the time. Meanwhile, most of the gregarious, well-adjusted types that I know of did occasionally smoke pot then.
Shedler and Block did not conclude that a little pot is just the thing to help children grow up right. Rather, they found that "psychological differences between frequent users, experimenters, and abstainers could be traced to the earliest years of childhood and related to the quality of parenting received." They observed that "problem drug use is a symptom, not a cause, of personal and social maladjustment" and that "the meaning of drug use can be understood only in the context of an individual's personality structure and developmental history."
As Jacob writes, it's not the pot that makes you well-adjusted - but it does appear that well-adjusted people do tend to occasionally smoke pot. And it doesn't appear to obviously harm them.
Does that make the politicians who are against legalizing pot either hypocrites, or maladjusted?
The former more so than the latter, I'd think.
It does appear as though hypocrite politicians are catering to prejudiced voters, of whom three groups, the old, the religious and the Republican, are particularly adverse to legalization. Is it that the old geezers, themselves well used to getting drunk on booze, have a prejudice against pot? If so, perhaps old people dying off is part of the reason why U.S. support for legalizing marijuana has steadily increased over decades?