This is why non technical average users are complaining about IOS7, because apple have taken away the simplicity, it's not a system your granny could use like it used to be. Who would have thought you would have to add a new keyboard to enable emoticons, and then who would know they were called Emoji.
Why doesn't the keyboard come default to display smiling poop?
Maybe Apple assumed adults were using the phone. The color palette and effects in iOS 7 make it childish enough I don't to send a mini pic of a cigarette, gun or even a syringe!
If you do then just turn it on. Every time I see someone use them it's to do something half perverted. Lol