It was useful and good like 10 years ago. Now they are not better than some other apps like viber, signal, telegram. I have stopped using it like 3 years ago.
10 yrs ago, so pretty much just before WhatsApp was purchased by Facebook and any/all data privacy was compromised by Facebook.
Pretty sure they’ve only recently — within the last two years — begun data mining through WhatsApp. But still, why would you use any app made by a data company when you can use something like Signal? (not telegram though, that app is pretty damn shady)