1. You do know that "those" children (ok, I must be honest that anytime some says those type of kids does anger me a little) will change your life?
So really there are people out there that have children and their life doesn't change. :)
2. You just wait, I bet the children in your home will fight and disobey you.
Again, seriously, there are kids that don't disobey. I know that I haven't had children of my own but anyone who has seen children, babysat, or there is a child in their family knows this is true.
3. You do realize you are asking to have trouble and chaos in your home?
First, sure their may be some trouble but as with anything good there is some trouble. But trouble doesn't have to be crippling to us, and child or not people have trouble. As for chaos, I have seen homes with children in them and biological children or not some level of chaos is present.
I know (or at least hope) that each person is just misinformed and are saying such things with good intentions, however, sometimes you want to look at them and say, did you really just ask me that, you do realize how dumb that just sounded. But instead I just smile.