What is something from Gilligan's Island that is really kind of dark, but gets ignored?

https://www.quora.com/What-is-something-from-Gilligans-Island-that-is-really-kind-of-dark-but-gets-ignored/answer/Jon-Mixon-1

The castaways met a number of sociopathic individuals - Think about it: The people who they encountered KNEW that they were trapped on the island, and yet did almost nothing (or nothing at all) to help them. They seem to be unconcerned whether they lived or died.
The Howells were older people at a time when the life expectancy age was far lower than it is today - It's virtually certain that either one, or both, would have died within a year or two of arriving on the island.

It was a tropical island, and so it would have been hot, humid, and rainy most of the time - While that's tolerable with air conditioning and refrigeration, it would be far less so with few methods to keep cool.

Their fruit-heavy diet would caused a great deal of diarrhea - That would definitely be unpleasant considering that there was no sewage systems, nor running water. Dehydration would also be a problem, especially for the Howells and The Skipper.

The Howells seem to have had a sizable number of people who wanted them dead - Despite being worth hundreds of millions of dollars, the search for them (forget the rest of the crew) was surprisingly brief. Michael Rockefeller, the scion of the famous Rockefeller Family disappeared in New Guinea, and they spent YEARS looking for him even though it was a virtual certainty that he was dead. The Howells barely got a month or so of searching, and their search was particularly incompetent as it didn't discover the same island that nearly a dozen others did. Clearly someone seems to have hoped that they were dead.

The Professor and The Skipper were surprisingly, and even dangerously, incompetent - The island couldn't have been farther than 3–4 days sailing/drifting time from the Hawaiian Islands, or they would have died from thirst. It's also relatively easy to determine your location on the Earth using the stars as reference points. That means if they had constructed a raft, and stocked it with provisions, then someone could have sailed into the shipping lanes within 2-7 days; and to Hawaii itself within two weeks. That rather obvious fact escaped a polymath and an experienced sailor.

There were an unusually high number of single people on the “three hour cruise" - Considering that it was the mid-1960s, that marriage rates were higher, and divorces were difficult to obtain, at least three of the five unmarried people really should have been married. That they weren't was so unusual that it really should have been a topic of conversation among them.

Given Gilligan's clumsiness and overall stupidity, coupled with the lack of antibiotics, meant that he really should have been dead within a year or so - Basically they would have named it “Gilligan's Island “ in memoriam of their late companion, as he would have been unlikely to have survived.

Mary Ann and Ginger were still in the age range where their menstrual cycles would be an issue - Obviously it would have been difficult to handle that on a deserted island, and it would been a major source of discomfort and difficulty for them during the YEARS that they trapped there.

They were extremely unlucky when they landed on that island - Somehow in the mid-1960s, they managed to locate an “uncharted desert isle" that had apparently not only escaped the US Navy, whalers and pleasure sailors, but also the Polynesians who settled the Hawaiian Island chain and who would have discovered every speck of land within 2,000 miles centuries earlier. Basically both The Professor and The Skipper would have had to realize that they were likely going to die on that island because of that, and that would have been a huge burden for them to bear.