I didn't say it was useless to everyone. I just said that it's pretty clear that it has a relatively small US footprint, and language fragmentation in Europe -

I didn't say it was useless to everyone. I just said that it's pretty clear that it has a relatively small US footprint, and language fragmentation in Europe - where Whatsapp is pervasive and useful - is a significant issue. Thus writing a desktop client isn't as simple as it would appear to be at first glance.