90% of parents do take lots of risk for their children.

I'd say more than 90% of parents. I'm a parent and I can't even quantify how much I've given up in terms of finances, time and efforts to raise my kids. And they're not even grown yet.

<Prepare for your tomorrow.

This advice is essential. But then, it's mostly common amongst parents who never made enough money while they were young and agile. A very rich man will never depend on his kids for money.