You feel wrong. I enable it when I have to, only.
> How can you build engaging web applications
Not my problem. I want quick loading sites with as few malware vectors as possible.
You should be building web applications which facilitate the transfer of information. You don't need javascript and all the other crap people are using these days for that. I mean, if you're all about pure eye candy and doing..I dunno, mandelbrots or something in the browser, then yeah, you're going to need javascript. But it's not going to work on mobile. Hardly anything like that works on mobile, which is fine by me; I do most of my browsing there.
To be honest, I think there's a market for a firefox addon which removes links to sites which don't work on mobile/require you to have javascript enabled to save me the effort of clicking back when i arrive at am empty page or when the screen is dimmed and all I can see is the corner of some dialog I have no interest in zooming out to look at.