But it's a choice, like not having a smartphone, the rest of us still want and can have nice things. In the cases where it's not a choice it's something else, some may need to make sure it still works. I'm not going to do it, I have no reason to.
On many sites javascript is about ad-tracking, not "nice things".
For example, cnn.com shows no content with javascript disabled. By itself html is perfectly capable of displaying text and graphics, that's what it is designed for. Taking a quick look it appears that about half of the scripts loaded on their front page are for ad-tracking. A gizmodo page I'm looking at now wants to load 37 scripts for some reason. ublock is showing me 14 ad-tracking items.
I'd rather avoid such sites. So I go somewhere else if they don't work with javascript disabled. I can make per-site exceptions, but I'd rather not.
(In the above examples, I use lite.cnn.com to consume news articles news MUCH more quickly, and gizmodo with javascript disabled still showed me the text of the article I was interested in, so I'm happy.)