Thanks, Dino, and all who answered.
It is funny that you mention the risk of condensation. I think I mentioned that I still have the TAGHeuer my dad got me for my 21st birthday. The first major repair of it came about because I took it up Kilimanjaro and the inside crystal fogged on the way down. I think what happened is the pressure in the watch pushed out at the summit to equalize with the thinner air at altitude, and then, on the way down, moisture laden air pushed in from the increased pressure differential on the outside. Then the moisture condensed on the inside of the crystal. It wouldn't dry out itself and I had to have it opened up.
Steamroom is out. Not worth it. And so is that excuse for a new watch.
Interesting story about your TAG and its journey up and down Kilimanjaro. Based on that story you clearing understand that moisture getting inside a watch, can come from sources other than submersion in water. I think many of us often think about water resistance in a very limited sense, simply wearing it to swim in a pool or the ocean. However, other factors beyond water can lead to moisture getting into a watch, be it extreme temperatures swings, pressure changes, significant differences in the density of air etc. I am sure most watches can withstand extreme conditions on occasion, but repeated exposure puts a lot of stress on a watch and its gaskets. A person might be lucky and not experience any problems for long time, but all it takes is that one unlucky occasion and you will see tell tale signs of moisture such as fogging up of the crystal. IMHO, if you have a good watch its just not worth it . Again thanks for the story about your watch and Kilimanjaro.