People freak out about smoking because of its legality: fact. Is it perfectly healthy? Of course not. But neither are a lot of things. I never drink caffeine anymore. Why? I have listened to my body. There's a universe where coffee filters are rolling papers and espresso machines are $300 paraphernalia you buy at small "grocery stores" in New York, I promise you.
There is a range of smoking. Just like you can drink an irresponsible amount, you can smoke an irresponsible amount. You can have one cocktail and feel relaxed and you can have one hit and feel relaxed. There are all kinds of different methods of marijuana ingestion and some, particularly vaping, are almost perfectly healthy.
Is it something one should do all the time? Hell no.
People that have posters in their rooms and bumper stickers and champion it as some all-healing herb are annoying, because it is a pretty gross habit if done to excess. But don't do it to excess and it becomes perfectly justifiable.
The whole "nobody's ever died from weed ingestion" is cliche for a reason; it's a legitimate defense in the case of alcohol and weed being, at the very least, no better or worse than the other. I think it's funny when someone refuses a joint like the guy offering it to them is trying to give their baby heroin and then almost die from alcohol poisoning the same night.
EDIT: CHRIS CRIME! You go to SMU? Also, dick sucking goes on in fraternities because they want to make super-sure they're not gay. Not sure the weed is a part of it. The only thing fraternities are worse at than drinking is smoking.