What do you think are the most harmful /bad/ shitty or stupid inventions ever created by humans? share your unpopular opinion.

To me i believe the most stupid invention ever made is smartphone ( ironic since I'm addicted to mine) but we have no privacy anymore. Every move you make, every picture you take is being saved somewhere else and ppl now can track you, and even see when was the last time u made a call. I miss the 90s and the lack of addictive technology back then 🙄😂