Part human nature but more human error in handling technology, I think.  Very rarely is enough consideration (about both the positive and negative) and thorough understanding taken when we disseminate and adopt new powerful and potentially life-changing technology. With great power should always come great responsibility and we so often seem to focus only on the immediate benefit or convenience before it's become ubiquitous. Some examples: guns, medicine, fossil fuel extraction, fossil fuel burning engines, factory farming, fertilizer, pesticides, herbicide, plastic, media, TV, internet, pornography, automation, etc...  -- perhaps with the exception of nuclear and atomic energy and why I think human error is far more to blame than human nature.