I don't think babies hate everything, I think they just have to learn to get use to the new tastes/textures, etc of the solids being introduced.
When I started to feed my DS baby cereal with BM, he also would spit it out and give me a sour faced look every time I tried to get him to eat the cereal. After a week, I tried again and then again, even mixing with formula. DS did not like the baby cereal. Finally, I tried mixing the baby cereal with water instead of BM or formula and he finally ate it. Not sure why it has to be water but he will only eat it that way. Even when I mix the baby food (jar or homemade) with cereal I have to mix it with water.
Try mixing the cereal with formula or water, maybe that might help you LO eat the baby cereal.
HTH
Mel