Why can't I feel emotional attachment?

I think that deep down you believe you don't deserve intimacy or affection from others. But in reality, you do. Intimacy is one of the best things in life and you will be missing out on many things without it. You should try to slowly adapt to the thought of trusting others more and letting people in your life. There are people in this world who love you and want to be close to you and you are only hurting them by turning them away. I am not trying to preach or anything but if you want to be happier, you should let people in your life.