Nice
I'm too nervous to put on screen protectors. Putting my Vita one on took two tries and a lot of frustration, because of my OCD. I was worried about getting it perfect and avoiding bubbles/trapped dust, but ended up with two bubbles.
I feel bad, because my Mom was helping me and my OCD acted up causing me to get angry.
I haven't touched the thing in six months, though I still care about it. Not enough to fix the screen protector since it's fine with the two bubbles now that all is said and done. I bought an extra pack just in case.
Anyways, since I never take my 3DS or N3DS outside and keep it in a drawer, I don't think I need screen protectors. I've never scratched a screen, despite playing Ninja Gaiden on a DS Lite.
I also hated the control mechanic in Resident Evil that made you put your oily thumb on the screen.