There are people in very poor countries who want it, just so they can feed themselves. Because the non-GMO stuff is apparently not capable of producing enough, or it is too expensive to keep weed-free.
Years ago, they used to blast crop plants with radiation to produce genetic mutations. Most of these mutations were not useful, but some were. This was one way they used to create crop strains that produced more, was more resistant to disease, etc. Another way was cross-fertilization.
GM is faster, because they can select a specific gene trait they want, and immediately put it in a plant's genetic structure, instead of waiting for cross-fertilization or mutations to produce that trait.
Is it "safer"? I don't know. I do know there's nothing new about genetically manipulated plants, only the technique.