Wait how can they NGP fanboys, which usually means they are offshoot of Sony Fanboys: if they say 3DTV failed.....Your friends fail! Honestly speaking no point in convincing people to change or open their minds, if they are ignorant, let them be, if you start telling them otherwise, they will just show anger and hopefully when they grow up to be adults, they will be more open to do things. 

Also I do use the word fanboys, because a sony fan wouldn't insult DS or 3DS like that.

Edit: Just accept you will have tastes different to others. I don't like Apple, and everyone seems to love it. I don't try to change their opinions, I accept that they like products that I don't. 

PS: The first statement, while is meant to be used as ammo is actually correct. NGP is graphically superior to the 3DS.