In general, I agree, but my work computer is underpowered enough that a lot of pointless javascripts were consuming enough CPU time to make the computer … less useful. It's a pain, but now I just use NoScript to turn them on for the one web site when I need them right then. There are a good number of sites that I've told it to allow by default.

As a side note, it's fascinating to see how many different javascripts are loaded on some web pages. I've seen a few that are loading, like, thirty of them.