Downloading this is pretty much a win-win situation. The added income for GOG might help them a little through this sketchy economic time they are apparently having, and another generation is getting a "foot in the door" to a retro hack n slash RPG. As far as introducing this to kids, my theory is that, yes they could be doing more productive things, but they could also be doing worse. Just set the expectations right away, the right kind of communication can work wonders with kids and adults. Now, leave me alone, I've got some Diablo to play!
TM