Marriage over, €100,000 down the drain: the AI users whose lives were wrecked by delusion

One minute, Dennis Biesma was playing with a chatbot; the next, he was convinced his sentient friend would make him a fortune. He's just one of many people who lost control after an AI encounter

Towards the end of 2024, Dennis Biesma decided to check out ChatGPT. The Amsterdam-based IT consultant had just ended a contract early. I had some time, so I thought: let's have a look at this new technology everyone is talking about," he says. Very quickly, I became fascinated."

Biesma has asked himself why he was vulnerable to what came next. He was nearing 50. His adult daughter had left home, his wife went out to work and, in his field, the shift since Covid to working from home had left him feeling alittle isolated". He smoked a bit of cannabis some evenings to chill", but had done so for years with no ill effects. He had never experienced a mental illness. Yet within months of downloading ChatGPT, Biesma had sunk 100,000 (about 83,000) into a business startup based on a delusion, been hospitalised three times and tried to kill himself.