If you don't live in a place with WhatsApp as the dominant chat app I don't think you could get it. I don't have FB, Instagram, Snapchat, Google, Outlook, or any form of social media, I am as disconnected as can be. But WA is truly inescapable.

Need to ask a very specific question about taxes? The government support person only answers through WhatsApp. Need to file an insurance report and even check if it was approved? WhatsApp. Need to schedule a certification exam? Whatsapp. Hell, more and more companies and government services are moving to WA only customer service/support, like not even help you if you show up in person and in some cases their phone lines (which are "always busy") just direct you to their WhatsApp.

Its also the only way of reaching coworkers/classmates. Not for like socializing or messing around, but for group work, file sharing, scheduling meetings, sharing important/urgent announcements, etc. And good luck getting mere acquaintances to install a secondary chat app just to talk to you, when we can barely get our friends to install adblockers in their browsers. Well, there are other secondary ways to reach them, Facebook Messenger and Instagram DMs, but we both likely agree on what to make of these ones.

I hate Facebook and am aware of their practices, but they have reached an absolute dominance over communication in most of the world. You can't just ignore them in day to day life.