To be fair, 3D has not exactly "hung on". How much 3D did you see in the 90's? I don't remember even a whisper of 3D that wasn't ironic or ill-conceived. Fads can fade in and out, and 3D needs to fade back out.
I can never bring myself to buy these things. Too much money for too little content. Glad to hear it's fun though.
This makes me miss my 360 a little bit.