Nope, as a married man with no kids, I can confirm you will just find something else to spend the cash on, you'll have nice things and go on holidays more than your friends, but you'll feel a slight emptiness from time to time that's probably the gap a child would fill. (Or at least I think about this from time to time)
Its more about if you want kids or not, you'll always find the money for things you want or things you need and most people live to their means, if you're really motivated to retire early and have nice things, you have to work hard at something you love or get lucky, there aren't many ways around that.