#Everyone has said it hundreds of times: Dracula is too self-centered to get they also considers others wishes not just their own desires.

[radiant-featherball]

Mathias: Join me in my eternal life. Leon: I will not become a vampire and spite Sara's last request! Mathias I thought you would understand... Death, kill him.

Dracula: Are you still siding with humans? Alucard: It was my mother's request! Dracula: Nonsense, I'll kill your human side and force you to be at my side.

After centuries Dracula changed his stance of (attempt to) killing loved ones for not siding with him to force them to join him.