personally i've smoked almost everyday since 1994 until 99, took some time off for school and started back up in 2001, had to take a break now to find a job and i'm not feining or having sleepless nights. I would smoke alot because i enjoyed being high, not because i was pissed or needed it to just function. I haven't smoked since thanksgiving and honestly it's no big deal. Even when i smoke a joint in the morning, one at lunch and a few at night i didn't feel worn out or anything. I do remember a time drinking mountain dew and it made me sick, throwing up and gave me the shits. even now to much caffeine will make me nausuos, feeling sick and just not right. where as weed hasn't made me feel like that, so until i puke and get the shits from smoking bud then i won't buy into that weed is more harmful then caffeine.