The reason for SJs hating humans?

One thing about all the theories that still bugs me is why the SJs want to wipe us out. If they were our so called creators who went to the effort of planting clues to where we can find them, then it doesn’t make sense that they would want to kill us so quickly. I get the Prometheus idea is around stealing from the Gods but I don’t really buy that one. One person takes something from a seemingly empty ‘temple’ and in retaliation they want to wipe out an entire species seems a little overkill. It’s like having a cat go through your rubbish bins and you decide to wipe out every four-legged animal on the planet. Besides, surely they must realize that any race that visits them is going to want to investigate their technology, particularly if its left laying around