I'm having a hard time understanding this as well. I am also confused by the "we" part. I know I am not in the "we" that feels that way. In those times, I am comforted by support from those who do know how it feels and what I'm going through.
I can and will say that I DO UNDERSTAND how it feels. I've personally said goodbye to 10 horses over the years, each one had a special place in my heart. My heart horse is buried next to a trail in our woods that I ride by quite often, she's been gone for 20 years and I still shed a tear on occasion when I ride by, so please don't tell me that I don't know how it feels.
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.