Of course everyone has a right to a career and a family. They shouldn't expect the conditions of their employment be altered to suit them.
Absolutely.
Because the conditions ought to be suitable in the first place!
In a more general sense, I think a lot of jealousy from people that do not have kids. For those that have taken the decision not to have any children, just bear in mind that when you retire, the taxation to keep the infrastructure of society going will be paid for by the children of your child bearing colleauges.
People, whether you are a biological parent or not, we all have a responsibility to share the burden of child care, unless you are willing to be euthanised on your retirement date. (which lets face it BA would love!)
CPB