So fantasy stories can be adapted just fine but superhero stories (who are fantasy after all) cant? Let's remove Legolas from LOTR. He doesnt do much besides shooting arrows anyway...
But Batman is the one walking closer to the line. He needs people to keep him from crossing it.
And in any case, Spiderman never had a Robin. Batman does and he is in the top 5 most important characters of the mythos.
Because a brilliant kid with an IQ almost as high as the goddamn Batman's cant be right and Batman wrong. Batgod much?
Tim has a brilliant mind and Bruce has admitted that one day he'll be an even greater detective than him.
RAAAAAAAAAAAAAAGE
The Robins are Batman's sons in everything but the biological sense. You need to read more Batman comics. Seriously.
And the value of the character is judged by how well some directors adapted him on screen? Because i can make the same arguement with Ras pre Begins:
"So far no good Batman movie had Ras. MORE JOKERZ"
Besides was the failure of the Schumacher movies Robin's fault? He was one of the best things in Forever.
That's it! GTFO and go read some comics. Everybody nowadays is a Batman expert because he watched the movies and read The Long Halloween.