First off, the new site looks terrible and I'm not likely to read it. When I first browsed over that way I thought it was April 1st and they had sent me to The Onion or CNN; the layout looked that similar.
That being said there are a lot of comments on here about how Slashdot has declined, and I disagree. There _are_ more stories each day which makes the geeky news seem less prominent, but you're always free to skip the articles you don't like! But the real reason I still read
Finally, the new site is obviously aimed at non-geeks. Look at the new site as a possible new interface to educate people who aren't geeky but would like to be. SlashBi: The gateway drug to the tech world.
tl;dr comments are Slashdot's real content, the news stories just point the way. Also the new site is ugly and probably not aimed at us.