She actually told me, "I'm like anticipation more than reality. When are you going to get pregnant again?" I'm SO SO SO glad I wasn't dealing with that immediately after childbirth.
Your MIL was definitely in the wrong and showed herself to be a real twit with that comment. But a teeny-tiny-teeensiest part of me sort of empathizes with her about the "pregnancy over birth" preference.
Not that I don't love my kids or enjoy their baby years, but I'm just having this flashback of a family dinner in which SIL and several aunts and uncles were grilling me about my work and daycare plans after my DD's birth, and then informing me of what THEY planned re: outings with and discipline of my daughter. My SIL, who I would not entrust with the care of an ant farm, informed me that she planned on using time-outs on my infant, unless they didn't work and then she would progress to "light spanking."*
I just remember sitting there thinking, "I wish there was a way to keep her inside. She's safe and warm now, and as soon as I give birth, she's going to be exposed to these whackos."
*Once I recovered from my shock, I informed SIL that disciplining my child wouldn't be an issue for her, because DD wouldn't be left in her care.