Communication

Here in our world of immediate communication to anyone, it is amazing when we still can't communicate when we need or want to. We use phones, txt messages, Instant messages, email, etc to instantly communicate to people when needed and sometimes messages are still not communicated correctly or in enough time. I am someone who anyone can usually get a hold of me very quickly and easily almost at anytime for anything, but why is this not the case with a majority of others? Maybe some people don't like communicating or don't want to quickly, but is this for a majority of people? Anyway, thanks for those who are efficient.
This is not directed at anyone, I just was thinking about it recently.