Prob'ly they re minimizing the battery consumption.
I don't think they need lights on the buttons..
But I think they do need it on buttons below the LCD screen like volume, home, brightness, select and start buttons.

You need go find zal and mod it if you want.

same. I can play well in complete darkness.

Anyway, someone say ugly ? Let me show you zal another mod that I think very nice

fren,

the light come out from the LCD screen oledi bright enuf even @ night. Maybe u r wearing sunglases to play? hehe just kidding. 

Prob'ly they re minimizing the battery consumption.
I don't think they need lights on the buttons..
But I think they do need it on buttons below the LCD screen like volume, home, brightness, select and start buttons.

the question is.. do you really2 need it?
i myself playing games in the dark dont have much problem
finding the buttons unless u r fully blind

you can pretty much memorize where the buttone are already...no need light la...

It's only the L and R button.. and you can't press it ? If a blind person can walk around the streets of Brickfield this should be a walk in a park for them..

I can play any PC games without looking at the keyboard anymore once you get used to the buttons..

Mods FTW !! >_<"

actually if u happen to own a psp, it became a part of ur body. I am sure u can bath even without light, so i dont see why there will be a problem in locating all the buttons especially wif some help from the LCD screen brightness. Same thing apply to sex too, u can do it in the dark rite?

Its pretty much same as asking why don't they place lights on console controllers or even light on the button on standard keyboards. The answer is we already know it at heart by experience. The reason was simply placing lights on the PSP increase power consumption and decrease battery life. Most people also find it already annoying that Sony placed the LED for the memory stick as the reading/writing process will cause the LED to keep flashing and cause annoyance to some.

no need led light unless u are a first timer for a playstation series.. hahaha..
every controller from ps1 until ps3 are using same button configuration..