Just to clarify, I played obsessively for 3 months, as in, as soon as I got off school, I would play DA, usually at about 5 hours a day, including my morning session (not to mention the 15 hours it got during winter break) not to mention with every new playthrough I spent more than an hour fiddling with the character creator. Dragon Age had been the first actual game I had played after a 7+years gaming hiatus, and I was utterly fascinated.
The 700 hours was what I've accumulated from the point I got the game to the time I posted. Although I did get a little addicted, I kept on making excuses to my friends when they wanted to hang out. As a closet-gamer girl in high school I didn't think they'd be very understanding (they did after some long-winded persuasion).
Like Time4Tiddy, I played through the origins up to Ostagar, and abandoned many characters there countless times. I remember one playthrough, a City Elf that I abandoned at the Landsmeet because I noticed I made the eyebrows the wrong color (I know, I'm vain). A game where I could make decisions was so unheard of to me at that point, I was dissecting every part of the game I could, finding every possible branching path.
However, what really pushed me over the edge was mods. They were foreign and fascinating to me, I downloaded dozens of them. Then it got to a point where the game got so glitchy with so many conflicting mods that I started over vanilla, and made a few more playthroughs.
Surprisingly enough, when I got Awakenings on release day, I didn't even install it on my computer until a month thereafter. In my defense at the time I was sucked into Mass Effect (not sure how many hours on that one, but for sure not as much DA.)