Do You Sterilize Earrings?

While I usually leave most jewelry discussions to FabSugar, keeping skin clean and safe is all me! And just the other day when browsing for earrings, I overheard a girl scold her friend for trying one on without sterilizing it first.

Hmm, even though that's a pretty impossible process in-store (and I opt for the hold-and-imagine technique most of the time), I've never thought of the other people who've come before. Do you routinely swab posts with soapy water or rubbing alcohol once you've added earrings to your collection, or am I taking germaphobe tendencies way too far thinking of a prior slip-on as a slip-up?