My parents are both long-since dead now. (I'm a so-called "senior citizen".) But I still find myself ruminating over stuff that happened, or didn't happen, literally decades ago. So I would say, no, you're not alone or a brat for feeling the way you do. (In fact, as I recall, I replied to another thread on this topic just a few days ago.) Here are links to 4 articles, from PC's archives on the subject of childhood emotional neglect plus links to 4 additional articles on letting go of past hurts & coping with painful emotions:

7 Signs You Grew Up With Childhood Emotional Neglect

4 Cognitive Distortions Caused By Childhood Emotional Neglect

6 Things Adults With Childhood Emotional Neglect Need to be Happy

5 Ways to Use the Emotions List to Heal Your Childhood Emotional Neglect

Learning to Let Go of Past Hurts: 5 Ways to Move On

https://blogs.psychcentral.com/dbt/2...-and-feelings/

https://psychcentral.com/blog/how-to...nful-emotions/

https://blogs.psychcentral.com/culti...nful-emotions/