I wasn't aware vampires had the ability to turn off emotions.
I myself can experience emotions but a lot of the time I feel emotionless. I don't know if that really counts as "turning them off though." I'm quite strange in that I've a high understanding of how humans react to emotions and I can read people based on emotions they give and body language and stuff, but I don't really feel them much myself quite often. I'm not saying I CAN'T feel emotion, just that I often find myself feeling nothing.
Has it's pros. Words are less likely to harm me, but it has it's cons. Whenever I hear about a school shooting or something, or when a family member has died in the past, hate to say it but I don't feel anything at all to that, not even a little.