My childhood memories and fear of abandonment

I think people have to be careful with childhood memories, and take them with a grain of salt. We can confuse them with the emotions of who we are now. And not to belittle your childhood trauma, but those all seem like normal, healthy moments in a child's life as he begins to separate from his parents. That being said, sometimes it's simply our nature that has trouble dealing with separation from parents and intimacy with others later in life. I know my first-born son is loved dearly. He was hugged, kissed, carried, fussed over, never abandoned or ignored, and yet he clings to me incessantly. My other son couldn't be bothered with mom. They were raised the same, but each has his own nature.

You sound like you are more timid of an individual. And that's OK, but for your own happiness and well-being, it might be a good idea to learn about self-esteem and confidence.