I've ridden with a lot of my friends in there cars and noticed that there vehicles will make some of the strangest noises I've hever heard. Funny squeels, weird clicks, annoying whitles, and the owner of the vehicle just ignores it. Same thing when i'm riding to and from school. Cars driving down the road making god awful nosies.
I on the other hand am obessive compulsive about the noises my bike makes. It bugs the hell out of me if there is an odd click, or a creak that wasn't there.
One time I rember a slight click every time I rotated the crank (while pedaling). It took me a half an hour of stopping, riding, and staring down at my crank while riding to realize it was the coated plastic ends of my spd shoes smacking the crank arm every rotation. Drove me nuts.
Are most of you like me, very tuned in to the noises your bikes make. Or am I just crazy?