Excellent topic!
Well, to reiterate what some sorors have already said, I don't have children, but if I did (namely a daughter), I'd *DEFINITELY* want her to be an AKA (and, if I had a boy, I'd want him to be an Alpha). No matter what, though, I'd want her to do her research, not just AKA overall, but for the local chapter as well. And, I'd want her to do it on her own (*not* pledge legacy) if she did decide on AKA. She'd have to choose what she'd feel would be right for her. But, I'm not gonna lie, though; if she chose to "go another way", I'd be disappointed.
I've actually already had a taste of this with my little sister (she graduates from high school in May). She said a couple of years ago that if she (and her best friend) would be pledging anything, it'd be Delta. Now, that I'm an AKA, maybe I can persuade her otherwise before it's too late.
I also have a teenage cousin who has expressed interest in being a Delta (my aunt enrolled her in a local chapter's "Cinderella" program last year; it seems like a done deal). Our family is an Alpha one (me being the latest addition), so she's gonna be the odd one out, but I'll support her nevertheless.
I also have sorors in my chapter who could've pledged legacy in the other 3 NPHC sororities (including a line sister whose mom is a Delta; she and her sisters are both AKAs; I'm guessing their mom was less than thrilled but supportive). I guess the moral of the story is that people have to decide what's the best fit for them, even if it is the wrong thing (j/k).