I'm one of those who browse without JavaScript and Flash and for me that IS a better experience. Try it once and see how much better signal to noise ratio is. I also like the additional benefit of having much less chance to be attacked through the browser.
And I also use Opera, exactly because I can enable using the built in browser settings both JS and Flash only for a few sites where I need it (like youtube).
I have just checked again: I don't have JS turned on for HN. It just works.