Regarding spending less time on HN: I did a 6 month blackout of HN because I perceived that it was taking too much time that I could spend on side projects. After the 6 months I came to the conclusion that I wasted that time on other things. Turns out that I didn't actually want to be productive, and I just want to waste time because my job and family life requires me to be responsible and productive all day long, and it's nice to be slacking off every now and then. So now I am back on HN to waste time :)
All joking aside :), checking HN is not time-wasting if it is useful for one's priorities (professional, personal development, etc.).
I don't read everything on HN, but I can usually find here interesting articles, and most of the time the discussion threads are even more interesting than the articles.