I think a lot of people may want to check out the post for a variety of reasons.
1. Just to check out the comment/question.
2. See what everyone else is saying about the subject.
3. Checking to see if they can help.
As to why they don't end up posting, I can only give you mine.
1. I don't know any more about the subject than you do.
2. Don't feel confident in the state of my knowledge on that subject.
3. Someone else has already given a definitive answer.
4. It would just be the 40th identical response to the same question.
Usually I'll open a topic because I have a similar dillemma as the OP.
I don't think anyone gets blown off on a regular basis, but also I don't think people want to just throw out answers that could end up hurting your season either.
Good luck and keep posting!