I've been an Android user for years - 5 different manufacturers - and ALL of them had front facing LED notification lights. Not ridiculously bright flash-strength LEDs, but discreet low power-use versions. Not one person I know has ever turned them off - they are extremely useful. One of those androids allowed me to display different colours depending if it was a missed call, text, email, or just social media.
Since I got an iPhone, I have to constantly turn the phone on to see if I missed a call or message. It uses up considerably more battery life than a low powered LED.
Apple is so far behind the times on this one, its embarrassing. The rest of the world gets it, why doesn't Apple?