The reason for this is because I've been focusing on watching three shows, the Lyrical Nanoha franchise, K-On, and, well, My Little Pony. All three of them are slightly girly shows.
Lyrical Nanoha is, in essence, a magical girl show. Yes, magical girls. Except Nanoha has access to giant laser beams, a starship and sidekicks who are actually useful. It takes more of a sci-fi slant after the third season though, so it technically isn't a magical girl series anymore, but I still feel slightly unmanly while watching it.
K-On is a show about schoolgirls forming a band. You can see why I feel unmanly watching it.
Despite the fact that I watch My Little Pony, I am not obsessed with it. One can technically categorise me as a brony, along with several of my schoolmates. The fact that we, thirteen year old boys, are watching a show about magical anthropomorphic ponies, is somewhat disturbing. I'm pretty sure I watch it for the memes.
Anyway, MLP would probably be slightly more awesome if all the ponies were replaced with schoolgirls and the series was turned into a fantasy slice-of-life comedy. It does somewhat fit.
I still feel unmanly though.