You do realize most people have to smoke marijuana 3-5 times before they actually get high from it? There's some sort of resistance to it in a lot of people, but once it's broken down you can get high anytime you smoke it afterward. I just got my girlfriend high for her first time and it took her 5 times of smoking it before she got stoned (5 separate occasions). And it was Bomb Kush which is fairly potent bud.
This is true, first time I smoked weed i did not get high, but second time I did. Must be THC receptors being used for the first time or something. I think your right people who say its not for them probally did not give it enough of a chance.
And yes pot is a pretty strong drug, with a fairly high psychological addiction property. Now a days i go thru phases of smoking it like periods maybe as long as 4-6 months on and 6-12 months off
Have noticed after using it comming off a long layoff from getting high that it will even make me groggy and almost hungover feeling in the morning for a week or so till I readjust. But that first hit of some sticky green will have me high as hell!