Is it wrong to not feel anything

Well, where do I start, I guess I should just go: well when I was a kid family abused and neglected me for being unemotional and not acting accordingly to situations and things around me.

They even called me a little creep and serial killer a lot of the time they called me psycho too, which, when I was a kid, I found very painful because I always thought that family is everything and those words and the neglect shattered the image kid me believed in.

So that led to me trying to act accordingly and fake emotions around people. Which by the way as a kid, I found out I only felt pain, anger and sadness. -(maybe... still not sure about that one)- .

Something I'm willing to share is I killed and tortured animals as a child, used to stomp on kittens and squish little newborn birds and other little critters to take my anger out on something so I don't go accidentally murder someone in anger.

Anyhow, so the recent year and a half or two years I have been getting more and more bored and indifferent to everything, when conversations with people ended my face just slips back into the cold uncaring me instead of holding a 'smile' as soon as people turned around or I go behind a corner.

It's like my mind just says what's the point of pretending any longer... well that's it. My question is this. Is it normal to be in this state of mind? Am I normal? Should I try to keep pretending? Because if I don't then who am I?