Steam Family Sharing allows close friends and family members to play one another’s games while earning their own Steam achievements and saving their own game progress to the Steam cloud. It’s all enabled by authorizing a shared computer.
This is why it sucks:
Can a friend and I share a library and both play at the same time?
No, a shared library may only be accessed by one user at a time.
If I buy Software from Steam that my wife or kids need to use then if they do I can’t play my games. Given that we are all up in the day and asleep at night I see no advantage to this ‘sharing’ in the family at all. I do however see a huge advantage in sharing my library with some guys in IRC who I chat to every day – they live across the Atlantic.
What should they have done?
Let me share the library AND let 2 computers access it at the same time but ONLY let a game be played once. I’ve bought Burnout Paradise just once as I have FEZ. Let me play one and the wife play another at the same time. That would be Family Sharing.
What this is better called is Timezone Sharing.
For games that I think more than just me will play I will continue to purchase them on GOG.