Bennythekvetch, of course, if Yiddishkeit to you is about ” practices and beliefs”, not about the Truth, not about the eternal words of Hashem, not about what Jews over the centuries gave up their lives for, not about the fact that Hashem has COMMANDED us to keep His mitzvos, then yes, I can see why you wouldn’t look down at Jews who know Hashem’s laws and throw them away. It is not a Torah obligation in any way to love people who threw away the Torah and deliberately engage in sin.
Your comment actually does not make sense. If it is about “beliefs” then accordingly it is my belief that I can ” look down on people who know the halachas yet still violate the Torah”. This is my belief, how exactly can you decide for me what my beliefs, religious or personal, should be? Especially if you accept that they are following their beliefs then what gives you the right to bash mine? If they can have their beliefs accepted what makes you entitled to have my beliefs denigrated?