My use of the thank button:

I learned long ago, thanks to my therapist, that there are various reasons why people hit thanks when I got my panties in a bunch when I posted years ago regarding touch, It's not about me.

I agree with most of or all of what the poster says.
I disagree with the poster, but am glad they posted.
I disagree with the poster vehemently, but they have given me food for thought.
They were brave enough to put their thoughts in print.
A good argument whether I agree or disagree
Not able to write myself, and want to be a part of the thread.
A post is funny.
I no longer use the hug button.
ETC...