Tell us who the "average joe who smokes weed" is. And since you ask for clinical proof out of one side of your mouth, while making assertions about people you freely admit you know nothing of out of the other, I'd like an answer and your sources to back it up. Who exactly is "the average joe who smokes weed"?
You have made a lot of assumptions because you haven't proven me with clinical facts that weed isn't harmless, so cut off the

You think that always being high and in a stressful or alert mode is the way to go, that is up to you.
Here is the pyschological of the average joe who smokes weed
http://www.biomedcentral.com/1471-244X/8/22, I quote to be more accurate
"Compared to never users, current marijuana users scored higher on Openness and lower on Agreeableness and Conscientiousness (see Table 3). Former users scored intermediate on these three factors. On the facet level, current marijuana users scored higher on four facets of Openness, particularly Openness to Values and Ideas, and lower on five facets of Conscientiousness, particularly : Dutifulness and : Deliberation. Other interesting effects for current marijuana users were the high scores on Angry Hostility, Vulnerability, Activity, and Excitement Seeking, and the low scores on A4:Compliance, as compared to never users. As depicted in Figure 1, the profile of current marijuana users is similar to the pattern found among current smokers, especially for the facets of Conscientiousness. "
http://www.123helpme.com/view.asp?id=10359, I quote:
"From my readings so far, there has been a continuing trend that marijuana users first turn on to the drug by tremendous pressure from their friends or peers. The peer group has a powerful influence on the nonuser because of the nonuser wanting to feel accepted by the "in" crowd. The trend of wanting to be "accepted" by a group of marijuana users is the major reason why marijuana use begins. Individuals usually find themselves in situations that promote marijuana use, such as parties, or within a group of acquaintances. The biggest age group that falls within these "acquaintances" seems to be from 18- 20 years old, but marijuana use falls sharply after the age of 22. Young people within the 18- 20 year old range seem to be looking for new and different experiences. The idea of being high also appeals to many young marijuana users- a temporary way to forget about the problems associated with youth.
Marijuana users tend to constitute a majority of the white, middle class community, which may be a shock to some Americans. My reading found in most cases that being black or oriental decreased the likelihood that a student would use marijuana. It seems that the sociocultural circumstances of the individual has a lot to do with marijuana use, not the race of the individual.
There were no differences from what I read, between marijuana users and nonusers, in the number of probations, suspensions, disciplinary actions, or expulsions from school. Despite the perception of a marijuana user being a psychological profile of rebelliousness, risk taker, or stimulus seeking, the evidence revealed that disciplinary difficulty did not occur with greater frequency than that of the nonuser.
Marijuana use did not appear to effect any marital conflicts or problems. Ninety percent of all married, chronic users and 96% of all nonusers and occasional users had no history of extramarital sexual affairs. Marijuana use does, however, contribute to whether an individual chooses to get married or not. Both male and female users stated that they were very suspicious of marriage as if it seemed " unnatural or unnecessary."
The effect of marijuana on the particular individual using it brings euphoria, mellowness, decreased tension, and a sense of time passing slowly. Tastes and smells are intensified only somewhat less frequently. Users also experience noted increased sexual pleasure, increased appetite, sleepiness, thirst and a sense of increased creativity, awareness, and communications with others.
The effect of marijuana on the brain I found was pretty interesting. The effects can include profoundly pleasurable feelings when deep brain sites are electrically stimulated by the drug, whereas stimulation of certain other well- demarcated sites induces profoundly negative feelings, including anxiety and anger. Symptoms of marijuana use in the psychological mind include the " dropout" syndrome, abnormal irritability and hostility, abrupt mood swings, and impaired short term memory. Some patients studied had experienced panic reactions and paranoia. Clearly, marijuana use does have a negative effect on some people who use it. "
http://www.druglibrary.org/special/goode/mjsmokers2.htm
http://www.doitnow.org/pages/125.html
http://www.cesar.umd.edu/cesar/drugs/marijuana.asp
You say that there is no damage by smoking pot but till I haven't seen a written article by a well known researcher that marijuana is absolutely harmless and not a damn documentary, I will call you a liar.