Weed affects people differently, this is a fact.
It affects teenagers new to the drug(less than 1 year), it affects introverts and extroverts differently, it affects habitual smokers differently, and I would argue them more negatively because of the social isolative effect and strength of reinforced habits(over 1 gram/day for years).
Sooner or later the negatives will outweight the positives in my opinion.
I have had some great times shooting the ****, playing games, exploring, "enhancing" outdoor activities and sports, with my best friends in the world, all the while weed being a central theme. Before parties, after parties, before pickin up at the bar, after you have sex with your girl, before/after working out, etc.
After all that, I moved away and now I smoke mostly by myself, have realized I have a serious problem with it, that it takes me out of my natural fun and relaxed state into overanalyzing and increased nervousness of making the move.
It affects that all important element of flow and fluidity when escalating and making the girl fall for you, and genuinely interacting on an emotional level(which can help with ONS's, #'s closes, besides just relationships).
You miss the subtle clues, the windows of opportunity. Because THC is fat soluble and takes months to completely clear out of a heavy smoker's system, those blunts on monday tuesday and wednesday can still make you feel introverted, shy, or less "ballsy" when it's time to go out on the weekend.
Yes, I have picked up a few girls while high(but def. had to get a few drinks in after the smoke), yes, many will brag about it and seem to enjoy it, but for me, it is nothing short of a game killer.
I have been trying to stop all day everyday smoking, and haven't done it like that in weeks. Then I skipped one week at a time, toking up on weekends. Now I am trying to stop that, entirely. It's really tough and a discussion for another board like the uncommon knowledge forums(90% of the posts are about people trying to quit weed addiction).
Bottom line, weed cramps your game, and the weekend I just had compared to a weekend where I smoked all day and then went out was like night and day, and gave me strength to stop smoking this plant to enjoy the positive benefits of being clean, for a longer period of time.
Stoners, legalizers, don't get pissed, been there done that. But there is such a thing as becoming a burnout and it does have distinct negative effects on sociability for most people.
Choose your own destiny! And stay with your choice, as I also struggle to go from "cutting back" to "cutting out". Sorry for the rant, hope someone learns something from my experiences and it was also a bit therapeutic.