What changed? Everything. We were married for 11 years when our first child was born and people told me - oh your life is going to change. I resented that and swore my life would not change.
Once she was here, everything changed but it was okay because I wanted everything to change at that point. My focus was the well-being of this child-period. So things change but you adapt and because as a parent we are so in love with our kids, we want the changes.
The one thing I missed, oddly enough, is reading a magazine. I loved getting a good magazine and lingering over each and every page. That was a thing of the past for many months after my daughter came into the world.