It is crazy how out of touch people on this platform can be. I live in Europe but have been to Asia and South America. People use WhatsApp everywhere. Just because you live in North America where everyone uses SMS/iMessage/whatever doesn't mean everyone does. I can remember my parents scolding me because they got charged for me receiving some SMS. WhatsApp was a gamechanger. You could send messages or pictures without having to think about the price of it (While being connected to a WLAN...). So at some point no one used SMS anymore. iMessage was out of the question also, because only a very small amount of people had iPhones. And everyone was scared of sending a Message because you wouldn't know if the Message would cost you or not. But everyone had WhatsApp.
For some people it is a requirement to have a social life. It is not your choice to use it or not. Network effects are taking care of that. If you think Signal or whatever is a better choice, good on you. But if you don't want to cut ties with some of your friends, prepare to use multiple apps. Including WhatsApp.
I live in europe and my social life is spread out between telegram, whatsapp, signal, discord. For professional life you could even include linkedin and slack. A single MCP server wont ever cut it for me and adding 6 for 6 different tools will confuse any llm and make it send the message to the wrong person. Completely ignoring the fact that I would not use this anyways... like people want to talk to ME not an LLM. Whatsapp has a chat with Llama now anyways if that's who they want to talk to.
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> WhatsApp was a gamechanger. You could send messages or pictures without having to think about the price of it (While being connected to a WLAN...)
Back, when data plans were around 1GB or less some network providers didn't charge you for using whatsapp on specific plans in Europe. There were also whatsapp branded sim cards, but I haven't seem them for a long time though.