Well, I'm kind of a jerk when it comes to kids, so I'm sure I'll come across as a bit rude, but here goes.
I'm not a fan of kids, I'll be honest. I'm selfish and enjoying doing what I want, when I want to do it. Maybe it's because I'm young (27, young-ish?) and maybe I'll change my mind, but I have never been interested in being a parent. As a result, all of my time, money, and love goes to my dogs. (And I guess
some goes to my husband

)
That being said, I would not call my dogs my "children". I DO refer to them as my "babies". Truthfully, my dogs behave better than most kids I've met. Both my parents and my in-laws refer to my dogs as their grandchildren/grand puppies and I call both my siblings and my husband's brother Aunts/Uncles. It's all in good fun, and I think everyone has a laugh about it. I love my dogs more than almost anything in my life, however, they are not "equal" to my nieces and nephews. I do everything in my power to make sure everyone is happy, safe, and comfortable whenever they are going to be interacting, but if push came to shove, the dogs are going to come behind children. Whether that means they get crated so the kids can run around, or they are left with a different family member so that the kids can be kids.
We only have one person in our family with young kids, and she is extremely respectful of the love and devotion I have for my dogs, just as I am extremely respectful of the love and devotion she has for her children.