I am not gonna lie. I hath worn my interests before. I wore a Zelda shirt to class once and a hot girl started talking to me because her and her sister played Zelda as kids. It was the highlight of that day.
But then I saw a lot of people wearing their interests and hobbies, or I just noticed it more, and I know it creates conversation starters between random people, but I rather people just talk to me for some reason more specific to me. The popularization of geek culture might have something to do with this.