It just doesn't bother me. I would never let someone use my iPad that I couldn't trust to stay out of my email. Doesn't mean I don't understand where you're coming from, it just doesn't matter to me.
1 reason I bought my wife her own....she will leave mine alone...
HAHA.
Matth3w: thanks for sharing your views. I'm a little surprised by the lack of response from anyone else but i guess it's not a big concern for many people.. I just hope that apple will add the option to lock this app in the near future for people like me.