There are a number of reasons for this. Let us look at two of the most important.
First, technology is here to stay because it can do a great deal to make teaching and learning easier. Through technology, we have access to much more information. We can use the internet to find information and videos and such and can use things like smartboards to display them. We can use things like clickers to quickly do quizzes in class. These types of things make day-to-day classroom work easier and are therefore not going to go away.
Second, the public is going to continue to demand that we use more and more technology. Technology is very important for many of the best jobs today and will presumably continue to be important in this way in the future. Parents and the public in general will therefore demand that we teach using technology so that students can become more familiar with the technology and more likely to be able to use it well after they are done with school. For this reason, too, technology is here to stay in education.