No, it's just that other people have different ways to use technology. I'm very text-based, so writing a quick message fits me best. I have a friend, non-tech, very busy, very sociable, that you can only reach by calling him.

I stopped wasting time pondering those questions, just accepted the fact the way people communicate can vary vastly, and if someone is difficult to get hold of then that's how it is. Better spend my time making more contacts.