I like the things I use to to be well designed and well made. So I dislike ugly code and concentrate on writing the simplest and most clear code. I also am quite happy to spend several hundred dollars on a beautifully crafted kitchen knife, but objects without practical applications -- such as ornaments -- do not interest me.
I used to be quite an extreme computer geek, and I can still do a number of things that would not be classified as normal, such as GPG sign my email to prevent tampering (my key is here) or optimise assembly code for out-of-order execution. However, as I have gotten older, I have developed a broader range of interests and am more concerned with having a balanced life than coding to three in the morning. Having said that, I like to think I get more done in the hours before most geeks get up than they achieve in an all-night session.
I am very strongly an auditory rather than visual learner, a trait I apparently share with most mathematicians. As a result, I have found mastering go, a game based largely on the aesthetics of shape, to be extremely hard. I do enjoy a challenge though, and even took up art lessons in the hope it would help my visualisation skills.