My son Thomas was due one month before my 30th birthday. You’d think that I would have been better prepared, but I was clueless. My husband and I, fearing we were infertile, had spent too much time fretting over whether we could ever become parents. When we finally conceived, we acted like this was the difficult part of parenting. Objectively, this part wasn’t as easy for us as for many. But now that I’ve raised teenagers, even I recognize that conception is one of the sweeter parenting tasks.