people feel lonely despite that they have cell phones, emails and voice mails....why?

I remember once a time i was walking with one of my friends in a park when his cell phone rang, interrupting our coversation. There they were talking and talking on a beautiful sunny day , i became invisible , absent from the conversation…....

Alienation index goes up as the communication technology advances…..People have cell phone , email and voice mails in hand but still feel lonely…..why?

Do you have such experiences before?

i agree with xiaoxiao