How old is too old when it comes to breastfeeding? For mothers who opt to breastfeed their children, the cutoff time isn't predetermined. Some kids never latch or quickly tire of it, while others can't get enough quality time with mom's 'boobies.' From a practical standpoint, breast *isn't* best for every mother - while others swear it's the optimal way to both feed their offspring and bond with them. Regardless of your personal experiences, it's clear that breastfeeding a child beyond one year remains taboo. Riona O'Connor learned that the hard way with a viral Facebook post. The brief reflection on her breastfeeding journey is accompanied by a photo of her feeding her four year-old son.