Immortality can be yours

From Sunday HeraldSun October 21 2015, p. 8:

BABIES ARE LIFESAVERS

If you have ever endured the sleepless nights, endless feeding and constant worrying that comes with having children, you may find this hard to believe.
But having babies can actually mean you live longer.
A study found that mothers are 20 per cent less likely to die than their childless counterparts.
Breastfeeding is also linked to a longer life, as is taking the pill.
It is thought that hormonal changes that come with childbirth boost heart health and ward off cancer. 

So having babies and not having babies both make you live longer.  Or, indeed, forever, as is implied by being less likely to die.

Part of the quest to classify everything in the dictionary into things that cause cancer, cure cancer, or both.