Maybe all you visit is blogs. But there are lots of websites that rely on JS in order to express their intentions. It's like watching a movie with the mute on because the english accents bothers you -and without the possibility of subtitles-.

It seems that for most sites that rely on JS, about ten percent is actually necessary and the remainder is useless advertising/tracking/analytics/fonts/social media buttons. NoScript, uMatrix etc. are really helpful here.