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. ↗
Drugs are a waste of time. They destroy your memory and your self-respect and everything that goes along with with your self-esteem. They're no good at all. ↗
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. ↗