I've said it before and I'll keep saying it until it happens...Robin can be done right if you take the right source material and apply it. The greatest Robin origin story I've ever read is Dark Victory. This is my favourite piece of work from Jeph Loeb. Tell me this story handled right wouldn't work in a live action piece. Broccoli hit it on the nail why "Batman Forever" and "Batman and Robin" didn't work. They changed Bruce and Dick's entire dynamic and aged Dick. While "Kick-Ass" was over the top and meant to be so...treated with that level of maturity and sophistication, there is absolutely no reason why Robin can't work in a live action Batman movie. I'm sorry for ranting about this all the time but it is a particular subject I'm really passionate about.
As Tim Drake so rightly concluded so many years ago Batman will always need a Robin!