Yes, its very irritating when people incessantly talk on mobiles and that too, so loudly and play loud music on it!
Did you read my article http://www.boddunan.com/miscellaneous/51-General%20Reference/13760-mind-your-mobile-manners.html on this very issue?? Don't mean to advertise but thought it would convey all what I have to say on this issue!!
No problem. If it's a part of our discussion, we can share our Boddunan articles' link here. I have cleared this doubt from admin few months back. :)
No doubt...many things have become easy with the help of mobile.
Let me give you today's incident.
Today morning, I and my husband went to a place to see a new home for rent. We were able to locate the place where the broker was, with the help of mobile, easily. That time, I thought, if only land phones were there, it's very difficult to find a person who is not at home. Also, no other way to communicate, if we can't find him at that place, where we are supposed to meet. I think mobile is most useful for such cases. Also, in many emergency needs.