Honestly if I had any kids I don't see the point in restricting their access because as I'm sure you all have done it, you are going to do what you want to do anyway. Even if it means sneaking around to do it because we are all curious people who just want to be right. It's what happens.. That being said at 8 years of age I'd rather see my kid playing a little more age appropriate games, but that isn't to say I won't let my 13 year old play this game. However, irrespective of age I think it depends on the child and how they act. Be mature for the age of 8 and I could see it possibly happening. Personally I'd rather have my kid feel they are ready and come to me and ask if they can regardless of age. I don't want to issue roadblocks that aren't needed when I can tell and see that it is only going to be more disruptive and counter productive. That being said it is mainly reliant on establishing an open and positive relationship and of course it isn't going to be for everyone.