Lovely idea, but how lucky did you really get? See above about shadow profiles.
Just because you never used Facebook that doesn't mean it never used you.
And do you know anyone who uses Whatsapp?
Might any of them have your details in their contacts app?
Might they have had to reply Yes to said details being uploaded to Whatsapp / Facebook? (Clue: yes).
Biting the hand that feeds IT
