Imagine you had an opportunity to make an investment. The performance odds of this investment are: 1) a 10% change of making 10 times your money, 2) a 60% chance of doubling your money, and 3) a 30% chance of losing ALL your money (not just the investment amount, but going completely bankrupt) and having your life completely ruined. Would you take that investment?

Of course these numbers are made up, but from what I've seen in life, it's probably not that far off: there's a non-zero, and fairly significant chance, of having a really awful kid that really screws up your life. If you're highly risk-averse, it's understandable I think why you might want to pass. Remember, estimates for sociopathy in the general population are 5-10%.