My policy on comments may need explaining.
I am selective about publishing comments, and - on the whole - only publish a few comments that I feel will (in some way) enhance the blog for its readership.
I think this is necessary because many blogs are spoiled (spoiled for me, that is) by their comment section.
But of course, this policy means that some commenters will put a lot of effort into a comment which will not be published (although I will have read it). I can only say I am sorry about wasting commenters time in this way, but it is the only way that I can manage the comments.
This policy may not be sustainable, and if it is not sustainable I will again disable the comments.
As an alternative to commenting, I would emphasize that I am pleased to get e-mails from readers; and will reply.