Yea exactly, Bruce has no chance of having a biological family.
Yes, he has the chance of having a biological family. He can get married and do it. He's not sterile.
Thing is he has a mission. His main concern is not a family since a family would consume the time he needs for fighting crime.
Why not have a adapted son?
Same reason. Because he is Batman and that is incompatible with fatherhood.
Why not having a wife? A dog, a normal life? Because he is Batman. He's not about having children (adopted or not) and a normal life.
There could be extra depth to it,
Or if Batman had cancer, or if he got married and divorced, or if Alfred was actually his father. many ideas could get extra depth. Doesn't mean they're good/suitable/appropriate.
Bruces father was very important in moulding him, especially in Nolans Bat films. Maybe he could pass down them teachings? "Why do we fall Dick? So we learn to pick ourselves up." Then there is the twist of Bruce becoming a Ra's like figure, teaching Dick to use his anger and hatred for good.
In Nolan films, Batman ios always looking for that day when Batman will be no longer needed. He saw that chance in harvey Dent, for example. But Bruce thinks that Batman is just momentarily needed. Now, if at some point he felt that there's has to be constant Batman in Gotham then he could start training a successor, which is a different matter than having an adopted son. It should happen when Bruce was way older.
Yea, and he doesn't want him letting his anger and thirst for revenge take over him. Bruce sees himself in Dick, I think that could be interesting to see on film, especially with someone like Nolan behind it.
If Bruce saw himself in Dick, then he wouldn't want him to become another Batman.
Well he doesn't have to be a little kid does he? He could be adapted to be a 18 year old or something. I think that would work much better. Then Bruce could actually be wary of his anger and him going to far. He would then set out to channel his rage and fear, like what Ra's did with Bruce. An interesting reversal, the apprentice (Bruce) becomes the teacher.
I also think that, if it was to be done, an older Robin would be better. It would a partner, not a son.
Oh, please. It's clear that none of the crew are well-versed with the character at all. If Nolan takes the initiative and finds a credible way of bringing the character into this franchise, then it won't take much effort to sway his cast. After all, before they met Nolan, I doubt they looked none too highly of Batman himself.
That's the thing. The crew can be versed in whatever they want. But it is Nolan himself who doesn't want to use Robin. And we all know that he's so versed in Batman he has even improved things from the comics.