"I understand..." Well, he could try to. Things were different for Raven than they had been for him (obviously) and he couldn't expect her to automatically share his viewpoints on everything. He also wouldn't count on himself swaying from his own principles either.
Leaning in, the half-demon looked like he was contemplating a hug. "I am proud of who I am," he assured her. And it was true. Kurt had days where he couldn't bear to look in the mirror, sure, but overall he knew he was a good person. "And I just want you to be proud of me too. All I've ever wanted was to know you, my mother."