WhatsApp (if used well) is one the best things that has happened in communications in recent times.
It is excellent for deepening bonds with friends, relatives, and professional contacts.
But you have to work to ensure that WhatsApp doesn't degenerate into uselessness/toxicity
By default WhatsApp can be too noisy and a distraction. Here's 4 things I have done to improve the situation significantly:
1. Surgical notifications
2. Ruthless exits from noisy large groups