Greta Christina's a long-time favorite writer, and I really like her musings on whether to ID as bi or pan.
This is exactly how I felt. Pansexual is exactly in every way what I am, but I can't be bothered to explain it every time. But I really hate bisexual, it implies I can only be attracted to two genders, when I'm really attracted to all of them. So usually I just say "I like people of all genders. It's a bit longer, but it's accurate and understandable.