ESPN will kill ESPN 3D by the end of the year. The ill-fated 3D sports channel that started as an experiment in 2010 won’t be broadcast in any dimensions soon. This is huge news considering the significant investment that TV manufacturers and broadcasters have put forth in an effort to bolster the struggling tech. We reached out to ESPN, and the company confirmed rumors about the end of its 3D broadcasts. ESPN citied lackluster adoption of the technology as the main reason. In an email statement, ESPN wasn’t willing to rule out 3D, saying the company will be all about it when and if the technology takes off and people actually start watching it. That’s a big “when” at this point. Over the last few years, manufacturers have sold loads of 3DTVs. ESPN 3D is the largest and most important source of 3DTV content out there. Without it, the medium might just die.