I suspect many might feel that way. Judging from my own experience, the urge to respond, or enter a discussion often arises from 1) urge to broadcast something triggered by, but not necessarily directly relevant, or contributing to the developement of a thread -- tangent or off-topic; or 2) some irritation, need to straighten something-out, correct it. Both s/w reactionary.

On the other hand, I've gotten well used to having composed something I thought was quite the cat's meow, but which seemed to fall into a black hole. (Maybe it finds nibbana -- rays of light with nowhere to land; "consciousness with no surface" (a Than-Geof-ism).)

People, I think, do read, scan a lot without needing to add (or subtract) from it. And then there's so much going by here, that s/t gets fatiguing, or one gets fed up with this or that type of thread; and going in and out of phases of interest / indifference relative to certain types of topics, types of discussions (irrespective of the specific topic), even certain players or when pairs or groups get locked in to some back-and-forth.

In all, expecting attention is risky; a good alternative is to attend to one's own phases of mood, of need, less dramatically, more like simply passing clouds.

Mr. Buddha had a good take: whatever one expects, anticipates, plans for, counts on,... it will never turn out just so. ... So, just like some practices, take a good breath, let it go, and start again. I've suspected that's why the breath is such a good object of meditation / concentration: it's always been there, as far as I can remember; will always be there, for as long as it matters; and constantly expresses two fundamental lessons: after every inhale (taking something on), there must be exhale (letting something go); then after that, the only thing left to do is begin again...

Interesting just to watch, e.g. one's own patterns of writing stuff; e.g. I tend to wind off into some kind of concluding moral-of-the-story. S/t wonder if my mother, the only child of a Lutheran minister, passed on this knack for sermonizing.

Daoism has this idea perhaps related to 'rebirth' and/or the paramis -- that one's born with a certain curiculum, something specific to work-out this time around.
... (It's a slow night)