The security history of WhatsApp is so horrible, it does not seem to make any sense to talk to them. Alone the fact that their app is sending your contact list

The security history of WhatsApp is so horrible, it does not seem to make any sense to talk to them. Alone the fact that their app is sending your contact list to their server, without asking you, on every app start, disqualifies the service. Their previous security track record just puts it over the edge.