Are fluid websites worth making anymore?

Absolutely. It is a big inconvenience to people with huge monitors to have to resize the page. It can also be a bit dodgy with some layouts. Little inconveniences, no matter how trivial, can actually affect people's opinions of your site.

Also, netbooks have odd resolutions which make it hard to design sites for. For example, I'm writing this at 1024x600.

It's not particularly hard nowadays either (in modern browsers), especially with min- and max-height in CSS, and the new gradients, etc in CSS3, so image scaling won't be as big a problem in the near future.

In response to the comment below, I think that the pros outweigh the cons in this particular case - IE6 is a problem everywhere. We just have to deal with it.

Yes, fluid websites are worth creating
As you said, it looks good and reasonable when you plan properly at design phase.

Your doubt about the impact of Ctrl + Scrollbar is not a big deal. This feature is primarily for accessibility, to make text more readable by increasing the size.

However, if you mention all your sizes in Pixels (px) it won't happen. Proper adjustment happens only when you use "em" to specify size. So you have a way to turn it on/off

I think it's nice to be able to scale well on a user's screen, rather than make the users pan and zoom. In a time when users surf the web from such a wide variety of devices, ranging from smartphones to ultra-mobile PCs, each with its own, possibly non-standard resolution, I think it's important to keep user-experience at a high level when your site is viewed on such screens. Regarding the text length, it could be bounded by a certain ratio, so it would fit nicely within the layout. I think there are also frameworks that may help with writing a site in a fluid manner, and help with coding maintainability.

I'm a fan of sites that do have a fixed max width of between 800px - 1000px, but can also scale down so that I can read the content without scrolling side-to-side and also without zooming out because often the text becomes too small to read and it hurts my eyes. So, this is normally want I strive for because I want to build sites I can be proud of.