Many people value Facebook for the experiences it gives.
You sound like one of those people that 'doesn't watch TV' in the 90s. To many TV doesn't give any value at all -- it is mindless drivel. However, many others like TV. So it goes with Video Games as well. The product of an entertainment company is entertainment. If you don't find entertainment in the product then don't consume it, but don't act like a spoil sport when others like it. Stop purporting your own opinion as fact.
The shadow profiles maintained by Facebook is the equivalent of watching your TV by stealing the non-watcher's electricity.
Triangulation of other people's profiles based on your phone book is the equivalent of handing over your non-watching neighbor's address to the (physical mail) spammers and then going and collecting only the interesting stuff from their house by using their key without their knowledge or permission.
Calling someone a spoil sport for pointing out the problems that FB causes to non-users is the equivalent of turning up the volume on your TV to a 1000 and telling your non-watching neighbor that all they need to do to drown out the noise is to go get a TV and then do the same.