I've been wearing a magnetic ring for a long time now, and my experiences are more or less the same. I have only one though; maybe I'll buy one for my other hand so I can play with the magnetic field too.

One thing to watch out for is magnetic keycards. My debit card doesn't have any problems (yet), and it's several years old; but the last 2 summers I've had to get the keycard for my hotel door remagnetized a few times. And yeah, if you're cleaning things with steel wool, you get tiny sharp pieces of it stuck on the ring, that are quite difficult to get off. I also take my ring off in bed, because our headboard consists of metal bars, and the ring tended to be attracted to it with a loud *ting* and wake up my husband.