I was considering one because a place surprised me with how much I liked it. Assessing where I might "fit" the best has been far and away the hardest part of this process - and I believe one of the most important. If I do end up doing one, it'd simply be so I could see how the residents act through the day, how they are treated, how they treat each other when working, what kinds of stuff they talk about, etc. And so my wife could spend more time in the area at the same time, seeing if she might like living there. I definitely would not be there to show off any pathetic amount of knowledge or skill I have, but rather I'd be observing during an attempt to better grasp what I was only able to get a small rough estimate of during the dinner and interview - basically to better figure out just how much like these people I am, or am not.