AITA for not telling my wife our new baby's sex because I didn't want her to make a boy name the middle name?

Background: My wife (F37) and I (M40) have been arguing over our kids' names for days. Our original plan was that we would each name half the kids because we know that we have two kids (older sister F5 and new baby). <br><br>I have a strong preference for single syllable names - my wife has a strong preference for multi-syllable names. We know that we have two kids because our daughter was a surprise - our wife didn't know she was pregnant until she was halfway through the second trimester.<br><br>With our daughter, my wife chose the middle name and I chose the first name. So our daughter's name is Meadow Elara. I wanted the name Dawn but I felt like Meadow was a compromise. <br><br>When we learned we were having a second child, my wife wanted to know the sex so she could start decorating the nursery. I am against the idea of gendered nurseries, but I know that can be a hill to die on. The nursery will be blue with a tree theme and yellow accents. <br><br>So here is where the argument comes in. When we learned our daughter's sex, my wife insisted on getting a head start on the nursery. Once the nursery was decorated and the sex was known, my wife stopped calling our daughter "the baby" or "our baby" and started calling her "princess". So this time around, I didn't want to tell my wife that our baby is a boy until the baby was born. <br><br>My reasoning is this: If my wife doesn't know the baby's sex, she can't insist on a gendered nursery. And if she can't insist on a gendered nursery, then she will have less room to complain if I chose a short first name. <br><br>The reason is that my wife likes flowy names, but I have always wanted a boy name like Kane. I know it's short and simple, but I like simple names. My wife sees it as "lazy" but I have always loved the name. <br><br>So I am trying to keep the nursery gender neutral until my wife is convinced to let me name our new baby boy Kane Atticus. <br><br>That is why I haven't told her the sex yet. I know it doesn't matter at all, but I just don't want to know. And I don't want the nursery to be gendered either. I like the color yellow, and the tree theme is super cute.<br><br>But my wife is furious. She says I don't have the right to unilaterally decide not to tell her the sex of the baby, because that is something she has a right to know. But I don't see it that way at all. The sex of the baby doesn't matter at all - we aren't going to treat the baby differently regardless of their sex. So why does it matter?