Why are professors' websites so ugly? I can't help but notice that even in CS, professors' websites are almost always difficult to navigate, poorly-organized, and just generally hard to look at (poorly-tiled backgrounds, inconsistent fonts, etc.).

Why is this? Is it expected of academics? I'll be applying to graduate programs in the Fall and took a few hours to update my personal website, and was outright told by a professor that it was "too much". If I have a "fancy-looking" website, will this reflect negatively on me as an applicant?
Not ALL professors' websites are terrible. As referenced in this nature commentary, many academics acknowledge the potential benefits of having a good website. This article also links to a contest where submissions for the 'best lab websites' were solicited. Many of the links there are great examples of lab websites with elegant aesthetics and intuitive navigation.

I think a lot of this boils down to the fact that many faculty are older or too busy; making a good website takes time and skills that most academics simply don't have. Some labs will hire web designers to help with design, but today's funding climate makes that impractical for most PIs.

Having a good website for your own interests and professional development can only help you. I can't see any downside to this...