Have you ever asked the average user how they feel about:

>seeing stranger's pictures and info just because they have a number my friend used to have, that's downright creepy and makes me wonder how many people who've saved my number can watch me on whatsapp and see when I'm online or check my profile out.

>Even people I do know, I don't necessarily want to see on there, employers, numbers i've saved for looking at places to rent, my ex landlord, clients i've had for work i've done. I don't need or want to have all these people automatically added to every chat program I install they also happen to have.

I have, it inspired them to clean up their contact list.