When I married my husband, he came equipped with an 8 year old daughter and what amounted to full custody. I was thrilled to have this sweet little girl in my life. Not long after our wedding, I became pregnant and did hope for a boy. I'm from a family of all girls, and my sisters had daughters so I thought it would be a welcome change. And it was, my beautiful baby boy. We felt the size of our family was complete, but an oops pregnancy occurred a few years later. A baby girl. My husband died the following year and I bought a 3 bedroom house in my addled state, thinking it would be plenty big enough. And it well should have been, but I shared a bedroom with the baby who became a toddler and I wanted some alone space. There should have been a good sharing solution amongst the kids, but toddler daughter/teenaged daughter, no. Toddler daughter/8 year old son, no. So I annexed the master bedroom which worked well and in the tradition of Virginia Woolf I had a room of one's own, we all did. Never a lot of hand me down or shared clothes but lots of stuff gifted from others and passed along to others.
Likes others I do think overall we get what we get. There are simplicities with all single-sex. It's entertaining to have a mix. The very tired mother of a friend of my youngest daughter had 4 girls and the husband kept wanting a boy to do "boy things" with: hunting, fishing, trucks, sports and other butch things. She did have a boy at age 40ish and guess what: their now 8 year old son has very little interest in "boy things", preferring nature, reading and singing in a band he's created with a group of kids. Trying to imprint your kids' interests with your own seems like a bad idea.