Why do people hate GMOs?

Could you please explain, in a curious yet respectful tone, why some individuals harbor negative sentiments towards genetically modified organisms (GMOs)? Is it due to concerns about their potential health risks? Or perhaps it's a fear of the unknown, stemming from a lack of understanding about how GMOs are created and their intended benefits? Additionally, do environmental impacts play a role in this sentiment, such as worries about biodiversity or the long-term effects on ecosystems? I'm genuinely interested in understanding the various perspectives and concerns surrounding this topic.