Although I would rather be without, Whatsapp is what my friends and family use so am a little bit tied to it...
Errm, pardon? You lost your marriage because of privacy issues of which messenger, please? And I don't get any logic here.....it didn't happen again and then you conclude that those services do respect your privacy now?!?
Threema and Telegram are both great. I like Telegram in particular, simply because of the build variations on the app store such as Telegram X and Plus Messenger.