Seriously?? You really think mothers are obligated to spend huge amounts of time and money not to mention put them at risk of a lawsuit in order to turn their private gardens into (very dangerous) 24/7 playgrounds for random strangers, purely in order to be permitted to breastfeed their own newborns in peace??
No 
I think people should allow neighbour's children into their gardens to get their own balls if they are annoyed by the children knocking to ask for their balls back.
LOL @ 'huge amounts of time and money', lawsuits....
The OP isn't a breastfeeding mother, as far as we know.
Maybe a little less projecting?
I thought this was a thread about a problem the OP wanted to solve.
Clearly it is a place where a lot of people can project all their hostility towards children. My mistake.
simply refuse to answer the door, so the children learn a valuable life lesson about taking responsibility for their actions, patience, and not demanding the world hand them whatever they want on a platter?
Yeah, passive aggression teaches children plenty about how to be a grown up
.
Not to mention that teaching them to take responsibility for their actions might involve allowing them to retrieve their own balls.
But I really want to know how we got from a case of children knocking to ask for their ball back to demanding the world hand them whatever they want on a platter?
Get a grip.