As you can easily re-enable it with any decent browser (Opera 12 is great) that is no issue since if you actually want to have a site to have interactive features on its pages, just enable it. Otherwise, you get soothing, plain, static content. Most sites to not require Javascript for reading text or looking at images.
It is pretty refreshing to load a page and have it usable within fractions of a second, instead of it having to go and fetch an untold number of external scripts, initialize and create the widgets and objects, etc. Not to mention that sites with auto-play A/V are prevented from blaring at you without your permission.
"Easy" is in the eye of the beholder. "Close tab" is even easier to do; and very little of Internet's content is actually unique (as in "cannot be obtained from a non-scummy site").
