I agree with griefing.
Griefing makes the game actually "survival". Real life survival is you vs the world vs everyone who is willing to take advantage of you and your stuff. It makes us hide our homes because we can trust no one. Also, we wouldn't be able to tell who is greifing or not. It's your responsibility to lock your doors and crates, and hide your homes. If anything, exploit griefing shouldn't be allowed, like locking random crates in peoples houses or watching where someone disconnects and making it so that when they spawn, they die.