Hi Mecyll,
There have been previous posts on this forum where I have noticed a common thread, and that is there are a lot of people who do genealogy because it's like working on a giant, never-ending jigsaw puzzle. Fitting people together with their relationships, discovering and documenting sources, making new discoveries, etc. Working on any kind of mental puzzles helps to keep the mind alert.
There is also a commonality in those who are detail-oriented. It provides an outlet for those who like to create order around them. As, John Vaskie pointed out, it calms him.
I think that there is another aspect, that is not often talked about, but I have run into it myself. I am not exactly happy with my family or how I grew up. But I realize that I could not choose my blood family. Oddly, I have this desire to know where I came from, so that I know that I can choose to be different than they were. And therein lies, I think, a key difference: free will and choice.
If you can get past the title of the book, "7 Habits for Highly Successful People", it has a fascinating beginning that talks about that we do have choices in our lives. That we can choose to behave differently, choose to react differently to events in our lives.
I liken this to the concept of Locus of Control in psychology. Those who have an External Locus of Control believe that Life "happens to them", that they are victims of circumstances, and that they exert little to no influence over their life. Those who have an Internal Locus of Control believe that what they do, and the conscious choices they make, influences their life in a positive way, and they see the results of that.
For me, working on genealogy is about discovering the past, seeing the connections, the changes in people's lives, and how it has influenced them, and in turn, how it has influenced me.
So that way, I see those influences, and I gain control over those influences. So I can make conscious, better decisions over my life, and I am not under some subconscious, generational influence. Because generational trauma does exist, and it's very difficult sometimes to see it and to break its influence over us. Like what you described in your family.
It doesn't have to be this way. But it does require seeing the problem, and making a conscious effort to not be influenced by it and to make better decisions.
My 2 cents.