Since the beginning of time, man has been inventing things to make our lives easier. But just because a creation turned out to be successful doesn't mean the person who is responsible for it is happy with it.
Lots of inventors have been known to regret their creations because they end up being misused and in some cases they've even cost people their lives.
Here are 11 inventors who lived to regret their inventions:
1. Alfred Nobel - Dynamite
The Swedish chemist may be best known as the creator of the Nobel Peace Prize, but in the 1900s he was associated with violence. Nobel invented dynamite as a safer, more stable alternative to gunpowder, but he never meant for it to be used in war. It is rumored that he launched the peace prize as atonement.
"Perhaps my factories will put an end to war sooner than your congresses: on the day that two army corps can mutually annihilate each other in a second, all civilised nations will surely recoil with horror and disband their troops," said Nobel.
2. Mikhail Kalashnikov - AK-47
Kalashnikov invented the assault rifle for the Soviet Armed Forces during the Second World War so they can protect themselves and lower casualties. However, his weapon has since been used for criminal purposes all over the world and Kalashnikov voiced his regret before he died in 2013.
“The spiritual pain is unbearable,” he wrote in a letter addressed to the head of the Russian Orthodox church in 2010. “I keep having the same unsolved question: if my rifle took away people’s lives, then can it be that I… am guilty for people’s deaths, even if they were enemies?”
3. Wally Conron - Labradoodle
In the 1980s, Conron created the labradoodle, a cross of labrador and poodle. Although he stopped breeding them in late 1990s, the mixed canines are still popular and puppy mills are breeding them on a large scale.
“Instead of breeding out the problems, they’re breeding them in. For every perfect one, you’re going to find a lot of crazy ones," Conron said about the puppy mills.
“I’ve done a lot of damage...I’ve created a lot of problems...There are a lot of unhealthy and abandoned dogs out there,” he added.
4. Albert Einstein - Atomic Bomb
Although J. Robert Oppenheimer gets the credit for making the first atomic bomb, it was Albert Einstein who created the formula.
After seeing the damage their work can cause, both Oppenheimer and Einstein spoke out about their regrets. Einstein was famously noted saying "woe is me," upon hearing about the Hiroshima bombing in 1945.
As for Oppenheimer, he had some mixed feelings about this work, "I have no remorse about the making of the bomb… As for how we used it, I understand why it happened and appreciate with what nobility those men with whom I'd worked made their decision. But I do not have the feeling that it was done right. The ultimatum to Japan was full of pious platitudes. ...our government should have acted with more foresight and clarity in telling the world and Japan what the bomb meant," he said.
5. John Sylvain - Coffee Pods
Those K-cups that give us the instant caffeine fix that we love so much were invented by John Sylvan. He simply wanted to make life easy, but instead he thinks he has worsened our addiction.
“I feel bad sometimes that I ever did it,” he said. "It's like a cigarette for coffee, a singleserve delivery mechanism for an addictive substance."
Sylvan has also talked about the negative effects his invention has had on the environment and has taken steps to make up for it.