I am also a happy Telegram user and think it offers amazing UX but if you leave WhatsApp due to privacy concerns, Telegram might not be the right solution. All

I am also a happy Telegram user and think it offers amazing UX but if you leave WhatsApp due to privacy concerns, Telegram might not be the right solution. All Groups and by default any other conversation you have are only encrypted in transport between your client and their servers. Also their encryption has been called into question a lot at the beginning.