So you can go on web forums and say "Well I really don't see it so you must be cheating with some JS stuff...".

I'm content with Opera's features: You can enable or disable Javascript in main preferences (of course), but you can also momentarily toggle it for your current browsing session, and even store site-specific settings. So, I surf with JS on by default, but turn it off when I happen to run into a misbehaving site, which is pretty rare. That provides for a pleasant enough browsing life.

I installed it when reading HN's RSS feed inside of netvibes, because NYT articles would decide that they didn't want to be framed and take over the hole page.

Then I decided that I liked noscript better than addblock+ and kept it instead.