I don’t have any relatives in their 20s. My daughter oly has 2 first cousins and they are both over 30. I do get a lot of conservative news/information and have a number of friends who are also FReepers. I have a pretty active group from my HS graduating class, of which I am about the most conservative of the very few conservatives in that group, but we all agreed many years ago (long before the internet) that politics would not ruin our friendships and that has pretty much worked for the past 35 years.
I primarily use it for local news. I live in a very rural county and “local” TV (and most radio) news is from either 100 miles away or a different state. It comes in real handy for information abut local going-on, or as I’m looking at right now, keeping tabs on the so-and-so that is trying to burn down the county - 58 arson fires since mid-Novemeber, including 5 this weekend.
While it can be annoying, Facebook definitely has its good points.
I am very close to my nieces and nephews and their children. Their children are close in age to my grandchildren and their kids are my great granddaughters ages. Since I only get down every few months, FB helps me keep up with them. I am very close to my nieces who are my daughter’s age. I love my family.