Partially playing devil's advocate. Partially because I realize that the family was the primary focus of the investigation and yet the authorities were never able to bring charges when it's patently clear there was a strong desire to do so.
Because of my current job I also realize that the investigation was completely bungled and there was a significant breakdown in protocols by law enforcement -- a breakdown that makes it very unlikely charges could ever be brought in the case. I'm also disgusted that despite there being little significant evidence pointing at them the family has had to endure years of speculation about their guilt, especially in regards to someone who was a nine year old at the time. Then I see where many posters here are basing their suspicions on websites, books, tv programs, etc. without any clear knowledge about what the source or accuracy of the information that's being presented is -- yet they feel they have a good basis to feel it was the family covering up for the nine year old? Give me a break.
Have I thrown speculation out there? Yep. I am open about it. It's not directed specifically at any suspect (With my apologies for speculating that someone close to the housekeeper could have taken her key and had it copied without her knowledge.). It comes at the case from the general outline of events, not clinging to pieces and parts of a "timeline" that's been cobbled together from source material of unknown origin and includes statements like someone reporting the info. "believes" this or "knows" this or that could or couldn't be true, where a bowl of pineapple was found, what's been "reported" to have been found on a speculative box of chocolates in Jon Benet's room, why a strange latch was on a door in the basement, whether $118k was exactly or almost exactly the bonus amount, whether earlier drafts of a ransom note were or were not found in the house or what is the time necessary to digest pineapple. For goodness sake, someone posted something about finding it strange the family would have fresh cut pineapple in the refrigerator because the poster really doesn't have occasion to have fresh cut pineapple in their refrigerator, so that is a strange thing for the Ramsey family to have. Hang onto your hats, I live in a strange house where you're likely to find fresh cut pineapple in the refrigerator several times in a single year.
I don't know what happened. I don't think it will ever be conclusively proven what happened. I do think given the fact the family lost a child it's unfair to speculate on such flimsy information that they're guilty when it's equally as easy to speculate that someone other than one of the family did the killing.
ETA, if possible doesn't mean plausible or reasonable, why doesn't that apply to the family? Is it so incredibly plausible or reasonable a nine year old did it?