Well, I’m perfectly willing to treat the question as serious, rather than as Jew-baiting.
From an anthropological perspective, the answer isn’t hard to find: Jews tend to be hated for much the same reason the overseas Chinese minority in Indonesia is hated, and indeed any ethnic minority which is both imbedded in a matrix of a minority culture, and culturally predisposed to have certain characteristics - such as a high respect for education, a strong work ethic, and powerful family structure.
The problem here is that most ‘traditional’ majority cultures stress conformity within a well-defined class structure. What is valued is social harmony. Outsiders lacking ties to the majority and having different values disrupt this, and the result is often envy and hatred - the mechanisms that keep harmony within local society, methods of social control, but ineffective on minorities who are already ‘beyond the pale’.
I witnessed an example of this in Indonesia. I was visiting a place called Borobodur, some decades ago - a famous acheological site - when I noticed that all of the food stands for tourists sold much the same food at the same prices. The food was terrible, but cheap. However, there was a small restaurant, obviously doing very well, that sold much better food. It was run by a Chinese fellow, and I got to talking to him - his explaination (for what it’s worth) is that all of the other food stands were run by local villagers, who in effect did not dare to make better food or otherwise compete with each other - because to do so would be to incur hostility: out-competing your own brother-in-law is not a good idea. Plus, gathering or accumulating weath wasn’t really possible, because your brother-in-law was sure to 'borrow" any surplus … however, being Chinese, the locals already did not care for the owner of this restaurant, and he wasn’t included in the local circle of obligations, so he was free as it were to out-compete all of them.
Plus, the Chinese (like the Jews) stressed the importance of education, hard work, etc. whereas the locals stresses the importance of social harmony, liberality with friends & relations, etc.
In this way, the overseas Chinese in effect became a considerable portion of the Indonesian middle class, much to the frustration and anger of the locals - which on occasion boiled over into anti-Chinese pogroms.
This seems to me quite similar to the reasons Jews tended to have a hard time in traditional societies, whereas they do not in North America. Of course it is not a complete answer, because in some places Jews formed traditional-type societies of their own.