I have read The Road; I have not read Blood Meridian (yet - not sure if I will or not).

I read The Road when I was probably 22 or 23. I now have a son who is six (I'm a man, for context), and I suspect that if I were to re-read it, I would likely weep uncontrollably for an hour or two, and then spend the next several months sporadically crying and clutching my son. It is a hard, hard read, and even harder (I assume) if you're a parent.

That being said, it's also a masterpiece of a book. Ultimately it does have a glimmer of optimism, it's just a really rough time getting to that optimism. I don't regret reading it, but once is enough, for now.