Well? Tim Cook apparently does. I had planned on doing so but a friend argues that the water may damage the casing; not as an issue of water resistance, but because the water in my city is somewhat hard, it may corrode or make spots on the casing. Now, Apple's made quite a fuss about their Stainless Steel; I'd like to believe it can hold its own against some "hard water" but the watch is considerably more expensive than any of my other watches. On the other hand, I've got a Pebble now and I'm not sure I can imagine NOT showering with a smart watch. However silly it may seem, I've gotten used to knowing who's calling/texting me while I'm in the shower, and I find it rather unpleasant to think that I may miss some prudent details within the ten to fifteen minutes it takes me to shower. Has anyone else given this any thought? And if so, please specify which series you're planning on getting.