"Childless people don't save more. They have expensive toys and hobbies." 

Not necessarily. My wife and I live comfortably, but we couldn't afford kids if we wanted them. It's hard enough to support yourself in this economy depending on where you live. We had to move cross country to an area with more jobs because our home was economically depressed. We're doing much better now, but even so, kids are expensive. 

On the other hand, I have cousins who keep poping out kids they can't afford just assuming that they'll get WIC and other benefits to pay for them. It's disgusting and terribly irresponsible. 

As for having expensive toys and hobbies, whether someone does or doesn't, what is it to you? People can spend their own money on what they like. For example, I spend extra to get really good coffee---you might not give a shit and instead spend it on dinner out. Neither of is "right." We just do what is best for us.