There is so much grief. Overwhelming. Having that go unacknowledged just adds more grief.
I have noticed that when people get sick, they tend to gravitate to some of us because they realize we've been through something deep and life-transforming, and we can understand their new state better than the healthy friends they had preferred before. And then some of what we've been through can actually become a valuable asset for others. Because we really know how huge sickness and pain can be.