"Real people often prefer ease of use and a multitude of features to perfect, unbreakable security. Who uses WhatsApp because it is end-to-end encrypted, rather than because it is an incredibly user-friendly and cheap way of staying in touch with friends and family?"

This is a little like saying: "Who uses a car because it has airbags and seatbelts, rather than because it's a convenient way to get around?"

I couldn't have put it better than Ed Johnson-Williams