Why did you decide to have children?

I'm glad to read that I'm not alone on this. I have been married for almost five years and neither one of us want to have children. I don't have a maternal instinct. I don't want the big responsibilty of being a parent. If it happens (I'm making sure that doesn't happen ) well, it happens but is not something we are looking forward to it. Just my opinion.
My three kids are Chikis( Chihuahua), Jerome(Yorkie) and Kiki( cat) and they are my whole life and world, well hubby too.