Asus RT-AC56U settings

[#1]

Ive just noticed theres a new update out for my router which now displays AiProtection, ( http://www.asus.com/us/support/FAQ/1008719 )  i read that its best to enable this right away.. so i have. Have any of you guys done this already ?

[#2]

It's best to do it if you don't trust yourself to only go to officially "approved" sites.
But who watches the watchmen?

[#3]

well i do trust myself just wondered if i really needed to use it or not