Well....I hate to admit but I have left the bike out, in the winter, a couple of times due to unforseen circumstances. Also...my bike is always outside all day long, all summer long until I put it back in storage in the winter. I have noticed some fading from the sun on the black plastic pieces on the handlebars...such as the volume controls...etc. Along with that, the plastic piece that has the lettering for the controls has faded...looks somewhat like old plastic. Also have seen some possible damage on the bottom of the windshield too but Im not totally sure what that is yet.
One thing that is a pain is when sand gets into all the nooks and crannies. I'm in Wyoming and we have a teeeny bit of wind out here, and with the sand and dirt and such, Ive had it gunk up my audio buttons on the tank before...to where I actually had to grab a sewing needle and spend quite a bit of time picking the sand out of there to free up the buttons. The CB radio push-to-talk button doesnt spring up on its own anymore so Im sure that is all gunked up too...not sure how to clear that up; though I don't have a CB anyways, haha.