Same situation with WhatsApp. It's deeply engrained in my home country's social groups. One group of friends followed me to Telegram, along with my direct family... but my more distant relatives and other groups of friends didn't bite. The other difficult one was Facebook Messenger.

Guess I'm banking on people finally realizing how creepy Facebook is. But since some of my friends have abandoned Facebook in favor of Instagram, of all places... guess I'm playing the long game.