Synching trophies, why?

[Feylic]

twesterm said:

Feylic said:
I've never manually synced my trophies. Every once in awhile I compare with some of my friends, and the trophies sync. Problem Solved.

And if I don't compare trophies with friends?  That really doesn't solve anything.

I know I have a friends list on my PS3 since I occassionaly see them sign on, but I don't know who 90% of them actually are...

Well then what's the point of even syncing trophies?