Well, the thing about NoScript is you whitelist only the sites you trust (or at least, sites
which you have to use regularly). After you build up a whitelist for a week or so, the web is
basically usable again.
Having said that, I eventually disabled NoScript for personal use since it is indeed quite a
price to pay. (I still use Flashblock, however.) But the security benefits are real. Just
because it's a bit much for home use doesn't mean it's not a good component of a
defense-in-depth strategy for Government, Military, or some other sensitive situation.