More kids to keep the house spick and span. This is the problem of todays fertility treatments. More than enough kids. Certainly wont help over population issues either. I hope the family can move into a bigger house eventually and have a good extended family household.
Also the human body isn't really meant to go through the stress of carrying so many kids at once. The doctor does not control how many kids come out. Fertility treatments really ramp up the chances of a mother having a kid since that's what they're designed to do. I don't know if doctors are doing anything to not ramp up the chances of somebody just wanting a kid or two as opposed to 8.
People today getting together and wanting to have kids...i wonder if future parents cringe at the idea of having so many kids should their wife need fertility treatments to be able to get pregnant (i know i wouldn't like that possibility, a much lower amount of kids is more than enough trouble for parents as it is after they have come into the world).