Fuck. That. Shit.
I choose not to have children precisely because spending my free time in certain ways is important to me. You can call it laziness or selfishness or whatever you want, but the fact is that my choice not to have kids was made largely because i understand how much time and effort they involve, and i didn’t want to do that. I shouldn’t have to give up on the free time i’ve purposely set aside in my life simply because you’ve made a different choice.
Now, because my time is more flexible than a parent’s time, i would be willing, in certain particular instances, to accommodate a parent who can only see his or her kids at a certain time. But the total amount of time off that we get should be the same. If i make an accommodation today because my time is more flexible, the parent needs to make an accommodation at a later date so that i’m not continually doing more than my share of work.