What's one thing you wish had never been invented?

Fashion.
Without it, we'd all have a lot more money in our pockets and fewer worries about what others think of us.

Weapons of mass destruction

Social media

The Epilady

I could say the atomic bomb, but its kept the idiot powers that be from fighting out rightly over the last few decades, but yeah. I'll go with the atomic bomb.

Viruses.