Wonderful life you'll have when you reach 70, 80, 90, 100, and you're retired and you have no one to come and visit you or take care of you.
Look around at life in the modern western world.
If you think people are looking after their elderly parents today, you're deluded. It's not the Waltons anymore with three generations all living in a big house carving up the Sunday turky.
Our childrens' spouces would never tollerate the idea of their in-laws moving in just when they've got their own kids off their hands and now it's 'their time' to enjoy themselves.
When I get old, I'm in the nursing home, same as all the people who have kids.