I am really interested in some of the smaller communities such as /r/datahoarder, /r/homelab and some of the Linux based ones. Other than that, I will just read some of top posts once a week. Contrary to most of HNers I think, I do like some of the comedy and foolishness of reddit. Perhaps I just haven't grown out of it yet.

Sort of, but not really. I used to browse reddit quite a lot, but fell out of touch due to the deterioration of general discussion of any topic.

I find HN to be a lot more developed in its discussions, opinions and userbase.

Yes. I used to look at /r/all but now I only do my front page with my specific subreddits that way I get rid of most of the crap

Nope. The signal to noise ratio on Reddit makes it a far worse time sink, and I've better things to do with my time.

yes, but reddit now more for funny stuff or random news. HN is slowly becoming my daily driver for just general reading/topics of interest.