Fujifilm X Series APS C sensor camera

I've been on the fence about the new Fuji 14mm - I was pretty sure I was going to return it at first. I'm still not totally sure I'll keep it, but after a full day of shooting with it, I'm leaning that way. No question about the quality of the lens - it's excellent to say the least - but just whether I'll use it enough to justify. I spent yesterday in Philly, doing a combination of street shooting and scenic/architectural shooting. My shooting in the various underground rail stations and related tunnels actually drew the attention and a brief interview with the good folks from Homeland Security. I won't get into a discussion about rights - I had no problem with their concern - but if I suddenly disappear....