

I was just reading this article about a mathematical understanding of closed time-like curves.
In essence, the argument is that time travel to the past is possible with a degree of free will, but you would not be allowed to alter the past in such a way as to remove the motivation for traveling back in time. E.g., it would be like Futurama where Fry kills his grandfather, but he impregnates his grandmother, thus allowing himself to be born. The idea is that the timeline would correct itself and ensure that your future self will always return to the past.

This would be called Emotional Detachment or Emotional Blunting. It is associated with several mental health issues, such as anxiety, depression, and schizophrenia, and it can be developed as a coping mechanism for a stressful or abusive childhood or past. It can also develop as a side effect for some medications, so it could be worth looking into a change in prescriptions if you think that could be relevant.
That is to say, it is an abnormal mental state, but you are not unique in this mindset. You should strongly consider reaching out to a mental health professional to see if you can work on this as it is likely to lead to more isolation and a worsening of your overall well-being.