I think it is a fun (and morbid) act of humor to go through my weekends, every now and then, to think to myself, and/or talk to my wife about it, how we could NOT be doing what we are doing together, if we had kids with us.
It truly validates our choice to be CF to be reminded of our gift to ourselves -- which is ourselves, the relationship between my wife and myself, and the peace we have. Ultimately, that is what it is all about -- being happy with each other, damned what society says!