Over the years, I seem to have developped the belief that the only reason why anything bad happens is because we can't turn back time. If we could turn back time flawlessly, we could have prevented so many deaths, wars, murders and pains in our lives. But because time won't turn back we are stuck with it. Of course we can learn from our past mistakes but I think that everything would be better if we could turn back time. Is it normal for me to think this way?

Besides, who says that everyone would use time travel for the greater good?
But I agree with Anime7 too!
But think about what bad things could happen if there was such a thing as time travel also.
Also what everybody else is saying. Mistakes happen. Correcting my mistakes makes me feel much better and brings more happiness. If mistakes didn't happen I wouldn't feel the same, it would be pretty boring.
Are all necessary, infact a painless life would have no meaning. Our constant technological evolutions are actually the problem.