Lienda, the '60s TV series is/was not the "original" Batman. It started as a comic book in 1938 (or so; I could have the date slightly off). The publisher added Robin in the '40s, as "the kids need someone to identify with." In the '50s, a psychologist made the Batman/Robin partnership the cornerstone of his book, Seduction of the Innocent, about the evils of comics. (He also had a problem with EC's horror and war comics, which is why Mad magazine became EC's sole publication.)
Remember that the tale of the Batman starts with a young boy watching as his parents are murdered before his eyes; as he grows up, he becomes obsessed with bringing criminals to justice, honing his fighting and detective skills until he could don the cloak of the Bat. "When it got so dark" was in the very beginning, in the dawning days of the Second World War (and the waning days of the Great Depression). In the 1960s, literary critics believed the age of the Hero was over, that the future lay in antiheroes and psychological portraits of troubled men (and women). The TV series was made as hokey and campy as possible, as the common wisdom of the time was that this was the only proper way to treat a Hero - as a joke.
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Sodium is a metal that reacts explosively when exposed to water. Chlorine is a gas that'll kill you dead in moments. Together they make my fries taste good.