When it comes to personal posts, I have two different sets of expectations. On an ordinary or cranky or happy sort of post, I prefer/hope for a response. On a post about something difficult or intensely sad or whatever--the kind of post that might be emotionally difficult to reply to comments on--I don't expect a response and would prefer for the OP not to respond if responding is hard. I say that because I know some people feel like they should disable comments if they don't think they'll be able to respond, even though receiving supportive comments would help them.

I hope that made some kind of sense.