Most of you probably read Seeking Alpha, but in case you don't...
http://seekingalpha.com/article/409101-how-to-allow-your-children-to-retire-young
I find these articles interesting because this is an almost constant debate in our house recently. My DH is keen to pay for a traditional college education for our kids ($40K/year). I think--if you're going to give them that kind of money--my preference is to invest the $160K for them. It would finance half of the cost of a state college at 5% return and then they could use the $160K as seed money for ERE after they finish college. We'd still be out the $160K (which seriously delays DH's retirement) but I'd feel like the kids were getting the most out of the money.