Yeah, that’s the thing. It’s not like Robin is the most interesting, dynamic, or vital character on this show. He’s really been under developed and it feels like the writers were just bored with him and didn’t know where to go with him next (so DEATH!) But there is something so…twisted about this idea that one semi-good-semi-helpful action allows a man who has committed multiple murders (some even very recently) to come back but allows the boring-but-mostly-good guy to stay dead (thus making fathersless two innocent kids in the process). I mean, Zeus is judge and jury here–does that mean he’s judge and jury for the Underworld too? Is it his flame that judges people and decides where they will go–the good or bad place? Why does Zeus get to decide what happens to Hook? And while he’s at it, why can’t Zeus (since he’s apparently our God-insert who can actually do these miraculous things) just bring back Robin with a wave of his hand since he seems to have literal control over life and death?????
I am wondering if the Zeus had no ability to do anything for Robin due to the factor it was the crystal that took his life and so their was nothing to revive. Could it be that a reward was due for Hades’ death in the form of a life returned and had Robin died from any other method than the crystal it might have be OutlawQueen rather than CaptainSwan with a happy reunion.
One other reason I can see for them killing off Robin is that I can see that it would have been a struggle for him to make peace with Zelena and to share their daughter fully with her. While this reaction from him is more than understandable given not only baby Robin’s conception, but Zelena’s actions aftwards, it would have created such a tension filled family environment that portraying it would have been complex, especially with the new loving bond between Regina and Zelena.
“The truth isn't easily pinned to a page. In the bathtub of history the truth is harder to hold than the soap and much more difficult to find.” - Terry Pratchett