For me...
I can't stand "cheap" jewelry... meaning no beads, no fake metals, no rope, no string... it has to be silver (or gold, although much prefer the silver color), has to be a real gem thing... or cut glass, can't be like... a stone (I don't like the plain murkey colored things, or feel of say, polymer clay and stuff...)
I can't stand bracelets for the life of me, so will *NEVER* put one on for more than 5 mins (and those 5 mins is to dress up and look like a wackball)
I had 1 beaded piece of jewelry that I'd wear... was a choker, and felt ok, because it was completely beaded and had no strings visable or feelable between it and looked solid and good... (which is ironic that I'd bead jewelry for people on a bead loom or just a string and give as gifts to people, but would never ever ever wear myself)
never wore any cloth/rope/string necklaces... I've worn non-standard metal, but metal is still metal and a lot more dealable than some cloth or plastic or anything...
I don't care how pretty it is, but won't wear any plastic jewelry either... the weight is just wrong, and its just so... fake...
I've got 3 ear piercings and they don't bother, although I rarely wear earrings (well wear a silver loop in top right ear all the time, but my two lobes... can be bare for years on end before I put anything in, and then thats usually for about 2 hours before I pull out again), but thats mainly because theres very little jewlery I find pretty/wearable...