However, if you get rid of cell phones, you would have to bring back Pay Phones. That would be just plain tragic. Also, a cell phone is 100 times better than a pager.
I like text messages for quick questions or quick answers, but I have a cell phone paid for by my employer and it doesn't have a key pad. Anything more than a few words and I might as well call.
As far as email, I like email a lot, but sometimes you just have lots of small questions and you can either have a 2 minute conversation and answer them all or type for 15 minutes and wait a while for a response. I guess sometimes it is more efficient to write a message and get a response back later on and sometimes it is best to talk now. It all depends.