Lala, me too had that kind of thought when i first came to know abt this. Then after discussing w DH, we thought we better drop this idea... since we planned to have more than 1 kid so we might not be able to afford to do that for all of our kids. Hence the No decision.
But if affordability is ok for u then by all means, afterall i feel its more practical than insurance..... Insurance, u "benefit" for a certain fix amt...