Not so sure about this one. Towards the end of my smoking days I became so extremely paranoid that I treated the people around me like pieces of crap.
However, I cannot tell if this was because they were treating me like crap all along and this was me finally retaliating or if it was that constantly look over your shoulder for the cops thing I developed.
I also (ab)used multiple times a day every day of the week. But I was also a stupid teenager at that age.
I would have to try again in good company before I could make a final judgment.
Okay, let's get something straight here and compare apples to apples.
I don't know how much you were smoking during each session, but I'm going to assume you had more than just one or two hits each time.
For me, smoking one small-medium joint by myself will be enough to get me pleasantly messed up for an evening, well past anyone's standards of intoxication, do not operate heavy machinery, etc. If I put that in alcohol terms, that's probably about five beers to get a similar subjective level of intoxication, potentially more depending on the size of the joint. (I'm 6' and 170lbs, so YMMV depending on body mass.)
Now imagine drinking five beers multiple times a day, i.e. going through a whole two-four a day. That's one surefire way to get yourself on a liver transplant list in short order, not to mention all the other effects of alcoholism, including mental illnesses.
Given responsible recreational usage on par with what's considered responsible alcohol usage, i.e. a joint or two a week, not more than once a day at most, then the risks associated with pot are infinitesimally small.
Of course smoking huge amounts of pot runs some risks. Doing ANYTHING to an extreme comes with risks, including eating apples or exercising.
I don't mean to go off on you, but this is something that really irritates me every time I see a "POT CAUSES SCHIZOPHRENIA OMFGZ0RS!!" article in a newspaper. I'm perfectly willing to admit that weed is dangerous when consumed to excess, but the media simply refuses to accept that there is such a thing as responsible marijuana use like they do for responsible alcohol use. Newspapers routinely publish wine reviews for chrissake. (I'm just dreaming of the day that the New York Times publishes a review of the latest high-quality joints on the market.) I have yet to see a study done that establishes a "safe" limit on marijuana use, like the hundreds done for alcohol, and if there were such a study I doubt it would get any publicity whatsoever because it would disprove the myth that pot is a vicious narcotic.