I only read the comments 99% of the time. This is usually because there are more interesting insights in the comments than in the post itself, and usually at least one person finds a mistake that renders the entire post nullified in its teachings. This may be a methodological error in a research article, a financial error in a business article, and so on.

In the off chance that commentors say it's good enough to read, I skim it, and very rarely, I will read it in depth.