If you want to be negative about the whole thing you can say all guitar bands after the Beatles were just a waste of time because the Beatles were the best. I think it's far better to give new records a try. ↗
I have never been in a natural place and felt that it was a waste of time. I never have. And it's a relief. If I'm walking around a desert or whatever, every second is worthwhile. ↗
I wondered a little why God was such a useless thing. It seemed a waste of time to have him. After that he became less and less, until he was... nothingness. ↗
You can meet a young person who goes to school and is really enthusiastic, but if a sufficiently strong personality convinces them that this is a waste of time, that person might flunk out. ↗
I soon became convinced... that all the theorizing would be empty brain exercise and therefore a waste of time unless one first ascertained what the population of the universe really consists of. ↗
Eventually, I believe, current attempts to understand the mind by analogy with man-made computers that can perform superbly some of the same external tasks as conscious beings will be recognized as a gigantic waste of time. ↗
I grew up in conservative rural Kansas in the 1950s when it was expected that girls would not have a life outside the home, so educating them was a waste of time. ↗