It seems to me that one major reason for Robin is have someone for Batman to talk to. Also, Pfeiffer is wrong in one respect. Even if kids consciously prefer to identify with Batman, on another level they're going to identify with Dick Grayson. It's like with Superman. When the heroics aren't underway, kids don't really identify with Clark Kent, but Jimmy Olsen. It's the adult fans who dig Bruce Wayne or Clark's romance with LL.
The child endangerment thing is too dark and gritty, especially for fake dark and gritty approaches. Which I guess is why Robin seems to be some sort of uncomfortable afterthought. This seems to be especially true since it seems like most of the second raters can't seem to get a handle on Bruce. Neglecting Bruce leaves out the paternal aspect of the Batman/Robin relationship. If Bruce isn't Dick Grayson's guardian, that pretty much just leaves a crazy man sending a kid into peril of his life, or worse, some sort of homoerotic relationship.
What I think is truly bizarre is that Robin hasn't been re-written as a woman.
the darker, grittier movie versions, like the Burton and Nolan films, have just ignored Robin because the character doesn't work in such a setting. And I think it's absurd even to have Robin in any version that's remotely going for realism.
I mean, the idea is that Batman is a brooding, psychologically-scarred loner who carries out a very personal war on crime as a private mission.
And... he brings along a teenage boy as a sidekick, constantly exposing him to danger? Um, no.
It might work as a concept if Robin was more like "Oracle," and hacking into computers back in the Batcave, but really, Alfred can fill that role anyway.
So the character is either redundant or just ludicrous as a concept.
He's okay in campy, Adam West-type versions of Batman, and that's about it.