A couple of thoughts here: Since SCA is an "age restricted" community, I think that it's easy to form a mental picture of almost a nursing home kind of clientele. I think, though, that the age restriction is actually only that ONE person living in the home must be 55 years of age or older. I know plenty of people who are 55 years old and are very young! Also, it would seem that an entire household of persons might be quite young except, of course, the "old geezer 55-year old'!
Also, most of the immediately previous posts here talk about odds and probablities. This is something that I've wondered about since the very beginning: On the one hand, it seems like it would be providential to understand what the odds are for several things: a "suicide" where one never finds the body; the likeliness of a "walkaway" w/ a situation like SK's -no note, tidyly leaving car where it would easily be found and towed, no obvious preparation, no computer trail, etc; the odds of a walkaway COMPLETELY disappearing w/o any activity recorded anywhere of him -no SS/cc hits, etc; the odds of foul play coming to someone just randomly, etc. -etc., etc., etc. I think that understanding the actual odds of these kinds of things would be very helpful.
However, on the other hand, it seems that there's are a certain level of probability of the improbable; hence, sooo much speculation on things that don't have any kind of real, evidentual link but are within the realm of possibility like transporting animals (even humans!!!) -driving cars for profit, "acting" and all kinds of equally odd possibilities, where he could have met w/ foul play.
Here is what I mean: Even though SK had some "issues" such as debt, career, still single, etc., there ARE people who place ads for people, even animals, w/ the intent of doing harm. Why? Motive? Who knows. Could be for the thrill of it. But it does happen. Why would SK be answering ads in the Henderson area? Well, I would think that a person might think that the job market, especially if he felt he HAD to get something, at least temporarily, that was beneath his education, like a service job, would be pretty good in a place like Las Vegas. Henderson, being very close to it, would probably have people advertising in LV. So, perhaps all of those things which we place so much importance on ARE important, just not to his disappearance. He's driving, he's mulling, whatever. Then, on Sunday, he's answering an ad that he saw online at the library or whatever, and he happens to be THE person, the one in many, many thousands, who answers the ad of a nefarious person who has nefarious designs. That person may or may not live at SCA but easily could. He could be 55 or not. Sixty-year-olds murder all the time. It's just not as usual as 20 year-olds.
Here, I think, is our problem: We have to look at both the "probable odds" as well as the odd things that just happen in life. It's quite possible that SK met with a fate that nothing -NOTHING- really points to. Okay, not sure where that takes us, but it's just something I think about. Odds and probabilities are good to think about, but COULD be a red herring! Eeek. This is a thoughie.