Time Travel

Time travel has always been a fascinating (science-fictional) phemonemon. While it is very widely used in many movies and novels, would this technology be ethical to use in our world? After performing some research on the topic and possible methods of time travel, I have come to the conclusion that time travel, no matter the method, would NEVER be ethical for humans to take part in. The main reason is because we should never alter the events in the past. Period. Events that happened have happened for a reason, and our world as we see it today is shaped entirely on that basis. Even going back to change a tragedy, such as preventing a terroristic attack, would severely alter the world, possibly for the worse. We can only travel forwards in time for a reason; the world would simply be too unpredictable and adaptive for humans.