Technology advancement in the world today is something that is improving as the day goes by. What we have in the world today courtesy of technology advancement is miles better than what we have used in the past. There are so many objects of technology that can be very frightening when you look at what it's capable of.
There are still some technologies that are of very good use to the world and when you take a very good look at how important they are, taking them out of the equation would be a very bad decision to make.
When it comes to the kind of technology that is very frightening to me, it's going to be robots. I have this phobia about these robots getting a mind of their own in the future and probably turning on human beings. The thought of this scares the death out of me.