I have 48 friends, but like half the people in this thread most of those people have left... I also got a few random friend requests that I just accepted.
The Friends feature seems pretty useless to me. It's nice to have your friends added on your profile, but I don't see any useful function to it.
Well, you can set certain settings to friends only. You can also use that stalker activity function on profiles to see friends' activities. But yeah, it doesn't have quite the same purpose as it does on social media sites.