why? because the games will suck and it sometimes it breaks
Because obviously every game will ignore the buttons and analog sticks and just use the touchscreen. And yeah...everything sometimes breaks, and I don't seem to hear widespread iTouch and iPhone screens breaking.
I don't like Gaming with touch screens. My DS's touch screen broke because that plastic crap thinge came off which was able to make contact with the screen. So I'm back with the PSP.
I wouldn't recommend touch screen for the PSP. I know anything breaks, but sometimes touch screens are sensitive and they break >.<