It is true that there are always those little ones that are rather, welll, are totally annoying! ( You know the ones that insist a collar of khorne is a 2+ invurnerable save for anything, the only thing that has that are those shadow fields )
However, not all younger players are clueless, ( I wasn't when I was ) I think if kids take the hobby seriously and not as, WOW Look at the dragon mommy, mommy the dragon. I think they are ok, atleast good. However, i suggest not playing 10 year olds. ( the idea of invincibility is still stuck in their mind with that squad of kroot warriors without armor cannot be hurt by a heavy bolter )
As for other things, 4th edition, am I behind? Last time I knew I had just completed a chaos marine army when they came out with the new ones! So is there a 4th edition here soon, or is it just a bunch of revisions on the 3rd. ( I always thought the 3rd was ultimate )