Just some thoughts that might be helpful...

I have also posted heartfelt responses, but I guess I am not super sensitive regarding being acknowledged for what I've written.

For me, if I've written such a response, I tend to view it as a way to share similar experiences and in many cases, a way to get my thoughts out of my brain. A way to release my own pain and free me from my demons perhaps?

Maybe it is up to each of us individually to decide what our purpose in posting responses is all about. Maybe, if it is important to know that the OP read your response, you can add a line "please let me know if my response is helpful to you."