I do think children are a choice ... but I also think that we start to tread on very dangerous ground if we start suggesting that only certain types of people should be allowed to exercise that choice. They are a choice, yes, but they are a choice that everyone should have the same right to make.
I also think that we need to remember that the choice is the choice of the parent, not the child, and that it isn't fair for society to let a child suffer in poverty because of a choice someone else made. This is one of the many reasons I passionately believe in a welfare state.
In benefits threads they are often referred to as such, with parents 'making taxpayers pay for their choices'
I've noticed that people who moan about parents who are in poverty receiving benefits and saying they shouldn't have had children they couldn't afford are still more than happy for their own child to have a state education and state healthcare ... which is also funded by the taxpayer, including taxpayers who have chosen not to have children. I don't see any of these people who spend all their time spewing hatred at benefits claimants extending the same vitriol to middle-class parents of large families who use the NHS and the state education system for the children they chose to have. So it's more about snobbery than the money, IMO.
Basically, I believe everyone should have the right to choose to have a child because otherwise you're edging into eugenics territory and we all know what way that path goes, and I believe that the state should ensure that no child lives in poverty - for the sake of the child, who shouldn't suffer for its parents' decisions.
I don't, however, think that means other people have to put up with someone's child's disruptive behaviour and I do think it's perfectly reasonable to exclude children from certain spaces. You have a right to choose to have a child. You don't have a right to let that child run around and scream in coffee shops, you don't have a right to bring your child with you to adult events and expect it to be catered for, and you do have a responsibility to at least try to minimise disruption as much as you reasonably can if your child has problems that keep your neighbours awake.