I never considered classical to be a "nerd-type" of music, more a "snotty-type" of music. Nonetheless, I also like listening to it. It's just, normally I listen to it as background music.
Actually, it's really great background music, I can write a report or write some fanfiction without distraction while listening to classical, but at the same time it'll still act as a mood-setter. Unlike with most modern music, classical allows me to focus on another task, while modern proves too much of a distraction.
Classical is great for when you're taking a nap or just zoning out too. However, it's not so great--for me personally--if you're jogging, or driving. I guess you just have to be in the right mindset if you want to listen to classical. (I'm a fan of Massenet and Stravinsky.)