Why does everyone use WhatsApp and do not want to install other instant messengers

If you look at the open statistics, you can see that
WhatsApp is very popular, occupying a leading position in terms of the number of downloads and active users.
But I wonder why? There are other instant messengers that are more relevant and reliable.

To begin with, this application appeared on the market 10 years ago. Then it began to gain popularity already from the first days. The effect of advertising in the form of word of mouth began. Every month the number of installations and downloads grew.
One of its advantages, users note a simple and intuitive interface. This software has an age category of users - people over 30, so for them this factor is especially important, unlike new-fangled technologies.

Also, this messenger is approved and supported by the government. WhatsAPP gives them their data, which is why it gets approval. Therefore, all correspondence on the one hand is accessible, but on the other hand, unprotected and visible.

WhatsApps most often highlighted by users:

1. Support for various operating systems.
2. Synchronization of contacts with those stored in the notebook.
3. Ability to create group conversations.
4. Lack of advertising.
5. Quickly send messages and media files.
6. Ability to make audio and video calls.
7. You can set a photo on your profile, set the status for a day.