it it also makes you about as dumb as a sack of hammers for the next couple of days and destroys your motivation after prolonged use. It has also been known to later cause psychosis in those prone to depression and anxiety (which FYI is a considerable chunk of the population, 1in 5) and overall worsen symptoms. It is also linked to schizophrenia in those who have no family history of the illness.
And no, schizophrenia and psychosis is not the same as having a 'different perspective.' They are involuntary and depending on the state of mind, can become quite dangerous to the self or others.
However way you slice it, it is a drug which means it does alter your brain chemistry and it's long term effects have not been thoroughly studied; apart from the psychosis and the heightened risks in mood disordered folks, it is known to be psychologically addictive and it's known to make a total bonehead out of anyone. What else is there? We don't know,
Now, in the interest of full disclosure, I have smoked weed before (quite a bit in my undergrad actually), and I acknowledge that it's an interesting experience and it has benefits for those in pain; I'm not against people giving it a try, but it bothers me when people talk about its benefits while glossing over its potential dangers.
Anyway, that being said, I don't think MBTI really dictates how one uses weed or why or what they experience. In my personal experience, every high is different and it depends on the strain and the people you are around and the situation you are in as well as the state of mind you have before you sit down to light up a bowl. Heck, even the way you smoke it makes a difference to some.
Newer users usually get the crazy giggles and want to go on adventures and all the stereotypical stoner speak and the ones who have used it longer over time tend to mellow out and like to sit around and eat/zone out in front of the TV and think about stuff.