Our decision at the moment to not have any more kids is because we want to be able to do things like travel with Jazz, and not put it off because we will have a newborn or younger child. Plus we both want to go to work when she is about 4 or 5, so we can buy a house. If we have another kid, thats morw time at home and we get even further from our home goal. So I get the selfish award! LOL!

Whatever reason you want to use is good enough. No one can tell you what is acceptable or not acceptable when it comes to decisions like this.