I have often thought that the only reason I have any connection with some family members is because I'm related to them. I have never been close to most of them outside of my immediate family members (only 1 sister and myself left now). I have cousins that I have not seen in over 40 years even though I saw them a lot when we were growing up. My parents were really close with all the aunts and uncles and we would visit or be visited every week with some of them and their children. But as that generation began to die-off, I never really kept in touch with the cousins very much. I had a few I would see maybe once or twice a year but others that I had absolutely nothing in common with other than blood-relationships, I never kept in-touch.
Many of my cousins I would probably not even recognize if I ran into them in a store or on the street as I have not seen them since I was a teen. I have two male cousins (brothers) who I have only seen maybe 4 times in my entire life and that was when they were out of prison for awhile before they messed up again and got sent back to prison.
My litmus test for family relationships is "If we were not related, would we be friends?" If not, I don't hang around much with those relatives. Having moved over 700 miles away from the majority of my cousins makes things easier. Where I live now in South Carolina is a lot closer to my remaining sister and even she is about 3 hours away.
The funny thing is that my sisters and I really did have the 'Father Knows Best/Andy Griffith Show' life growing up. I was really naive and quite shocked to learn that some of my grade school friends had abusive or alcoholic parents as I just assumed everyone had the family life I had. I never even saw my parents get into any arguments until near the end of their lives when I think the stress of both of them dying at nearly the same time started to wear on them. I had no idea how blessed I was until I saw that others had horrible parents and home lives.