Thanks for the comments, all -- lots of good points, some of which I hadn't considered before. A few thoughts:
It sounds like DA'ing isn't even an option since I wasn't baptized. I get that no one at the Hall cares about me, but that's obviously not the point. I'd only have done a DA'ing in order to have it affect my relationship with my JW family, nothing more.
Although I'd like to see my parents and little sister escape from the clutches of a cult, I'm not sure I care enough about them to exert the considerable effort that it sounds like it would take to even attempt to do so. I haven't called my parents since two years ago, when my wife and I kept reaching out to them to encourage them to attend our wedding. Not pay for it or help plan it, just show up and have a good time. After much teeth-pulling, they did arrive, but in retrospect it would have been better if they hadn't. They were withdrawn and hostile around my wife's family, and my mom kept rolling her eyes whenever we'd walk by. Our wedding director had to practically order them to step into the reception area for our first dance as a couple. Other guests kept approaching us to ask what was up. It was embarrassing.
I am grateful that my parents weren't completely opposed to education. However, at the time, their position was in tune with the Society's -- post-HS schooling was okay, as long as it was done with kingdom goals in mind. They paid for a small part of it. (FWIW, my middle sister was a zealous, self-righteous JW throughout college, so my folks happily picked up the whole tab. Three months or so after graduation, she told my folks she didn't want to be a JW anymore, although technically she hasn't DA'ed. I'm still a little annoyed with her about this, since I feel that she essentially got to have it both ways, so to speak.) In that way, my experience is probably envied by some exJW's. That's nice to hear, but it doesn't make me resent my upbringing any less and I'm not sure how it should affect my behavior towards them moving forward. Just because you're not living out on the street doesn't mean you shouldn't aspire to getting out of living in your car.
I'm extremely nervous about having my parents in my life as long as they're still in. I do not want them to have any chance to be able to teach my daughter any of the things that I had to deal with growing up. I may just let things be as they are and not make any effort to have them in our lives, or I may give them the ultimatum that they won't be fellowshipping with me until/unless they make some hard choices.