Agree

I dont want to be banned if a kid messing around in my game

From what i read I thing this option would be better for all games with any anti-cheat not just VAC system.

That seems like Valve missed something with the newer Family Share then; because before you could never share games that use VAC or 3rd party DRM such as requiring UConnect, EA-Games, Rockstar Launcher...

I'd like to see this implemented too.

This has also been requested in Suggested that games participating in vac can be selected by the user to prohibit sharing and [family sharing][feature request] filter shared games by cheat detection too.

I've also mentioned this in a Reddit comment and received 57 upvotes, leading me to believe that this is by no means an unpopular feature request..

Originally posted by Kelučim:

From what i read I thing this option would be better for all games with any anti-cheat not just VAC system.

Valve should probably start with the ability to exclude VAC Protected games from family sharing, since it...

• Is easy for Valve to identify VAC protected games (Valve shows this in the game features on the store page of every VAC protected game)
  
• It has by far the greatest consequences: getting VAC banned due to a family member leaves a nasty mark on the Steam profile of the original game license owner. I'm not really sure how games that don't use VAC handle this transitive game banning, but for VAC the consequences are simply very apparent.

The system could later be expanded to include more forms of anti-cheat systems.

It is also in Valves best interest to implement this. The more games get excluded from family sharing (whether by request of the publisher/dev, or voluntarily by customers that choose to exclude games from sharing), the more new copies Valve will sell and thus earn money.

I don't see any abuse potential in a "Do not share my VAC protected games" family share toggle.

Well make a separate account then if ur family sucks i guess / or get a job if ur poor. I dont see a problem i only see problems if they are not banning the account