I fought weed for SO long, but now I really like it (pretty much because I've finally let myself like it) - that said, I regard it strictly as a vice and indulgence; not saying one can't function on it and accomplish things, but come on, to continue the semantics issue, why do you think people always talk about wanting to "get fucked up?" It makes you goofy, high, and happy, and I've come to love it when I've taken care of all my responsibilities and feel I deserve it!
And yeah, it's NOT addictive, it's just habit-forming, like anything else fun (the biggest comparison I always make is video games, which are definitely as dangerous in this day and age IMO!). All it takes to not get "addicted" to weed is a little fucking will-power, work ethic, and self control!
EDIT: That said, I really only like to smoke at night; generally during the day I prefer being clear-headed!