Spoken like somone with no friends... Only "people you know".
As you age, your group of real friends get smaller and smaller due to life changes. This is just reality.
I don't have tons of friends, nor do I feel like they are a necessity. I have co-workers, acquaintances, and of course friends. The number of friends is minuscule compared to the number of co-workers or acquaintances I have.
I think that is pretty normal in the real world.