Yes and No.
Obviously my reasoning is extreme, I know that.
Anyway if you don't want to make grow-up your main characters (Bruce, Hal, Barry etc.) and then come close to retirement, you cannot proceed to introduce new generations of heroes.
Dc wants to introduce Damian, Jon, Wally II, Emiko etc... I have nothing against it, but you can't mantain your former herores forever young, maybe the bigger problem of New 52 reboot.
This is why of my former statment "in a perfect world".
I know that all that is an ipotetic and controversial theme that DC will never pursue.
For a long time the parnetship was kind of unequal, with Tim not revealing his secret identity and sometimes being kind of condescending toward her from time to time, it wasn't until Yost Red Robin run when he actually started to see her as an equal in crime figthing. Now, a lot the problems with their relationship were partially Tim's immaturity and Batman medling in the whole affair (telling Tim not to reveal his secret identity to her, ordering him that Spoiler and Robin shouldn't work together anymore and use her to manipulate Tim and make him "a better Robin" etc), the writters also changed a lot so it was also kind of inconsistent with the presentation of the couple, now in my opinion, it was more a case of their circumstances around then being unhealthy, when you let then by thenselves, they still had problems, but nothing that any other superhero couple hasn't gone througth before, of course your feelings regarding that depends of your reading of the whole thing.Really, why not?
One of my fave Batman eras. Grant amazingly took all of Batman’s history and revamped it while adding in new ideas like the Dick and Damian partnership. Truly epic in scope. (I wish he’d take a pass at Wonder Woman, her history, and zany characters for a few years.)
The Dick and Damian dialogue and interplay was inspired. The ward of Bruce Wayne is truly the only one who might understand the scion of a Wayne and al Ghul.