It's about the glimmer of hope that love can bring, which ties into the film. Eternal life has brought this once man melancholy and despair. Why bother any longer to not be slain by a constant tormentor? Why believe that victory would make that existence any easier? Love. Killing Van Hellsing would be choosing to remain alive with all the anguish of that eternal existence. Why do that? Because he loves someone now. Gets me every time. No wonder Peter didn't know it was a comedy.
It's about the glimmer of hope that love can bring, which ties into the film. Eternal life has brought this once man melancholy and despair. Why bother any longer to not be slain by a constant tormentor? Why believe that victory would make that existence any easier? Love. Killing Van Hellsing would be choosing to remain alive with all the anguish of that eternal existence. Why do that? Because he loves someone now. Gets me every time. No wonder Peter didn't know it was a comedy.