Here's the link: http://www.psxextreme.com/psp-news/2193.html
Manga reading list: Bleach, Naruto, Katekyo Hitman Reborn, One Piece, Code Breaker, Gamaran, Kuroko No Basket, Fairy Tail, The World God Only Knows, Kimi No Iru Machi, Good Ending, Medaka Box, Nisekoi, D.Gray-Man, Ao No Exorcist, Freezing, Magi - Labyrinth of Magic, Soul Eater, Rosario Vampire Season II, Iris Zero, Ubell Blatt, Bloody Cross, Sun-Ken Rock, and Infinite Stratos,
The 3DS' battery life is estimated at 3-5 hours when you have the 3D fully on. It has much better battery life when you turn the 3D off, as well as a performance boost with some games.
It is being used either way. You just get different benefits and there will always be some people who the 3D just isn't for.