Now is the 21st century. Of course, new things should replace old things faster. This is also called communication-formation ~ this is an inevitable event! Of course, the pros and cons depend on the emergence of new things, what teenagers do with it, how to say it, and from what angle! This is very important! Judging the pros and cons from now on ~ Simply put, the reason is that things are slowly replacing, evolving and updating, just like computers. It would be very useful to look up some useful information online! If you use it for fun, you can imagine ~ the pros and cons depend on what aspects, there is no absolute boundary!