The uncertainty of parenting can bring up feelings in us that range from frustration to terror.
Waking up every day and loving someone who may or may not love us back, whose safety we can't ensure, who may stay in our lives or may leave without a moment's notice, who may be loyal to the day they die or betray us tomorrow - that's vulnerability.
I think our capacity for wholeheartedness can never be greater than our willingness to be broken-hearted. It means engaging with the world from a place of vulnerability and worthiness.
I was raised in a family where vulnerability was barely tolerated: no training wheels on our bicycles, no goggles in the pool, just get it done. And so I grew up not only with discomfort about my own vulnerability, I didn't care for it in other people either.