I hate how Sony chose to lay out the buttons. I grew up on Nintendo and Sega, and I really can't handle anything but A,b,x,y,z,r,l, or 1,2,3,4. I know, incredibly lame, but I really hate circle, x, square, triangle. Not only is it hard for me to remember where they are, (correction) two of them take more than 1 syllable to say, and square just sounds long.
Also, I don't think they did shapes for "really young chidren" if the kids can't say their alphabet or count, then they won't be old enough to really play any of the games. (with the very few exceptions, but then they'll have parents helping them). They did it so they wouldn't infringe on Nintendo or Sega's patents.
I'm slowly getting better...