The answer is Media are free of emotion. You can have a very emotional conversation with some buddy. Examples are:
Person: Why would you want to go to the wedding if you don't like them!
You: Because they Invited me to go!
Person: I still would not even so.
You: Well that does not really matter now does it.
^^^
That was kinda silly but I hope you can understand that using "!" and "?" can help you have emotion in you texts\ messaging.