You know, he may not be immediate family, but he might as well be. My last individual family thankful post before Thanksgiving is for my Uncle Dave. Many of my friends know him as my dad's twin that isn't really his twin. Of the three brothers, they just look a lot alike.
Uncle Dave is just as much of a friend as he is family. He is one of the very few people on this planet that I actually call. If you asked my best friend if I call, she would say it is only when it is serious, someone has died, or the gossip is just THAT good. I have made it a habit to stay in touch with my uncle for various reasons. First off, he is a great guy. Second, he treats all of us like we are his kids even though he probably isn't a huge fan of kids. Third, he always has great advice, which I am almost always in need of. Lastly, he is a lone wolf just like me. It is hard to take advice from people with kids and a family because they have different priorities behind their decisions. Someone that is similar to you and can offer better insights into your world that you might just be glancing over.
I am blessed to have 3 uncles who are all great and all care for all of us. I have just been lucky enough to have one around for almost every holiday and extra random weekends. One day, we still need to start a business.