My mother says that disliking something is a reason to avoid it, but hating something is a reason to destroy it. So if we said we hated someone when we were kids, she’d ask “do you dislike him enough to kill him?” If we said “no,” she would tell us that we didn’t really hate him. Maybe she was being a bit folksy and exaggerating somewhat, but I think it’s at least accurate to say that there is a difference between wanting to avoid something and being hostile towards it. The former involves dislike, the latter involves hate.