Why hittler dislike jews?

Answer 1

It was kind of like a 'religion' to him. He grew up hating them. But that is what most sources will tell you.

It was because most of the bullies in his school were Jewish that he grew to hate them with all his 'sanity', if he had any at all in his life. But he also needed a group or something like that to target as problem causers so that he and his underlings could harass them and have their civilians turn against them.